It being the only explanation doesn't make it correct. There is still the possibility that we simply don't know, it is why we have science, to try and figure out reality and how it works.
Which is why I said "currently". Do you not believe in gravity simply because we don't actually know what causes it, only that it exists? No, you believe in gravity out of its effects, not the scientific backing of its existence.
How do you know a prophecy is really coming true? If it is an event that can be cause by people well there is such a thing as a self fulfilling prophecy because someone wants it to be true they may be willing to make it reality. Do you mean they've already happened? Well claiming to have predicted something will happen after it has happened doesn't have any solid backing to it either. Everything is 20-20 in hind sight. How specific is the text? If it is vague enough you can make anything mean anything.
Just because something isn't explained doesn't mean divine intervention of some or any sort. It means there is no explanation!
Of the approx. 2500 prophecies in the Bible, about 2000 have come true. One, being David's prediction in Psalms of Christ's death. Psalm 22 explicitly explains crucifixion, eight hundred years before it was invented. Ezekiel tells of the great city of Tyre's destruction. Which came true. So many prophecies, so little time. Look at the text if you doubt me. They are usually very clear and plain.
Show me someone magically regrowing an arm, something blatantly impossible with how our bodies work.
Well, I would, but I am a great distance from you, so I can't.
Shockingly enough we aren't required to know everything about reality, if we did wouldn't science be pointless?
Quite right, science would be useless if we knew everything. Good thing we don't, or I wouldn't be getting a job in nuclear engineering!
Should we listen to the bible about illnesses and believe that they are really just demons possessing people? Should we stone our unruly children, burn witches, see homosexuality as an abomination, and should slaves serve their earthly masters while we're at it?
Well, I could go into Social Darwinism, but that would be rude. Instead, there are some holes in your argument. So many atheists believe Christians are called to be strict, overbearing, and law-following people. Unfortunately, it isn't true. Instead, we celebrate our freedom in Christ. Galatians explains it amazingly. The Old Testament Law(the stuff you referred to) was the old gaurdian against Death. Christ stepped in, fulfilled the Law, and replaced it with Himself. He is now our gaurdian.
To combat your points, stoning of children was practiced back in the day(way back in the day). Thankfully(because I was a very unruly child), we are not under Levitical Law, or the laws of the OT. Witch burning was never practiced, except in the Witch Hunts(Salem Witch Trials), which were immoral and unjust. Homosexuality, is an abomination, but, homosexuals are not. I love the sinner, hate the sin. To sound more gangster, I don't hate the player, I hate the game. And slaves? Oh, you are referring to the old-type slave. More of a servant by today's standards. You see, when a man(Bob) went into debt to another man(Paul), Bob could pay off his debt by working for him. Bob would be given a denariius, a day's wage back then, and eventually would be set free once his debt was paid(usually about a year or less). However, God didn't want to make slave-owning a problem, so He set up the Year of Jubilee(done every seven years), where every slave had to be set free. And slaves back then weren't rounded up and shipped in hell-like boats across an ocean, where most would die from disease and sickness, and then wind up on a plantation where they would most likely be abused by some master, and then killed. Instead, most slaves became friends with their masters. Some even enjoyed it so much, they would still work for their master. It actually wasn't that bad of a life. So you have no grounds for your accusations, sir.