1. Why is Christianity the right religion, I only state the macro religion and not any sects to be easier to answer. Out of all the other religions out there and the millions of people that follow other religions what makes this one right?
Here are a number of points to consider:
1.) The God revealed to us in the Bible fits better with what reason and logic can deduce of the nature of the First Cause that brought the universe into being than any other non-Abrahamic religion. By necessity, God as the First Cause must be omnipotent, transcendent, personal, and unchanging. And this is exactly what the Bible reveals God to be.
2.) The fulfillment of prophecy that we see in Scripture strongly suggests a divine Source. No other religion has in its sacred text both prophecy and its fulfillment as the Bible does. Hundreds of years before Christ was born the Old Testament prophesied his coming and the purpose of his advent into the world. And it did so in specific detail, which Christ in the New Testament fulfilled in every respect.
3.) The resurrection of Christ is a powerful proof of his divine nature. His death, burial and resurrection are well-attested historical facts and set him and his claims to be "The Way, the Truth, and the Life," apart from every other founder of a religion. He didn't merely claim to reveal God, but to
be God, and he proved it by rising from the dead.
2. If I am generally a good person with good intentions through life but do not embrace the cross do I become damned in the afterlife? To me that doesn't seem right, as it probably isn't but please explain.
By what standard do you judge yourself to be a "good person"? God sets Himself as the standard and He is perfectly holy. Are you perfectly holy? If not, you don't measure up. And for this reason, God will reject you and set you eternally separate from Himself if you should die before receiving for yourself the remedy for your sin that He has provided.
Are you as good as Mother Theresa? Have you given your life in service to the poor, sick, and marginalized? Probably not. So, then, not only are you not as good as God, but there are some humans who are, comparatively speaking, more good than you. How much less good than such people do you have to be before you no longer deserve to go to heaven? Where's the cut-off point? And who decides where that point should be? God provides an objective, authoritative standard by which all people are judged.
Also, God has at terrible cost to Himself made a way for you to measure up. He will cover you in the perfect righteousness of Christ and in so doing make you acceptable to Himself. He did this, not because you deserved such a gift, but because He is a loving God. When a person who is aware of the sacrifice God has made of His only Son on a cross rejects or ignores that sacrifice he offers a profound affront to God. It is appropriate that such an affront suffers the eternal wrath of God.
3. Why is it such a big deal to "spread the gospel", wouldn't there be a lot more peace if that one single line would be eradicated from all religions and let everybody choose themselves.
Although the gospel is spread it is not forced upon people. The gospel is believed and embraced by choice and so is not a kind of religious aggression of the sort you find, say, in Islam.
4. Did not men write the bible, and is it not the nature of man to err.
The writers of the Bible claim divine inspiration. Under the guidance of God Himself it doesn't seem reasonable to think the original version of the Bible was in error.
5. If there is a god, why does he allow brutal killings of innocent people everyday. Why has he allowed for society to evolve to the point where the justice system does not seem to be able to convict and punish evil violent crime convicts.
If God prevented or punished every wrong step a person made, they would be nothing more than a puppet. Could you imagine what it would be like if God gave you stomach cramps every time you had a lustful thought? Or what if He caused boils to break out all over your face every time you told a lie? How would you feel about that? It would be very annoying to have God intervening all the time this way, I think.
How can we be truly free moral agents if we are prevented from experiencing the consequences of our moral choices? Our free choice is meaningless if the consequences of our bad moral choices are prevented.
Humanity has chosen the state in which it presently finds itself. It is not God's fault that we choose evil rather than good.
And whose to say God hasn't intervened many times throughout human history to forestall or thwart evil? In fact, He has. He doesn't stop all evil, but He does prevent some of it as it serves His purposes to do so. The story of the Exodus of the Israelites from Egypt is a good example.
6. What are his explanations of space, the universe and the scientifically undoubtable fact that life does exist elsewhere.
"Scientifically undoubtable"? In fact, the idea that there is alien life somewhere out in the universe is entirely speculative. There is not one single shred of evidence even to suggest that there is life elsewhere in the universe.
What do you mean "what are his explanations..."? Who is the "he" you're speaking of? Are you wanting an explanation from a Christian perspective for why the universe exists?
7. If there truely was a monotheistic Christian god then why are other religions allowed. Especially when the majority of the other people in these religions have no exposure to christianity and thus are never even given the option to convert. Do they go to hell as well?
Other religions are allowed so that we may be truly free to make, and be fully responsible for, our choices. What freedom of choice could we claim to have if God made it so that we could only worship Him? God would have the devotion of slaves or robots under such circumstances, not the love of true believers.
The Bible suggests that God takes into account in judging people their access to His truth. No one can claim utter ignorance of God, however, because the world, and the universe, and our conscience declare Him very plainly. What one does with that revelation will be the basis upon which they are judged.
These are just a few I have and I want to see if anybody actually responds before I post more. Again I am not trying to appear offensive nor should it ever be taken like that. I simply want answers that I feel should be explained to me before I accept any religion as my own.
You are not offensive in the least. I appreciate that you are taking a thoughtful approach in considering the claims of Christianity. Ask away!
Selah.