Maybe I've misunderstood your post then, because that's my point exactly. We have free will; God doesn't force us to accept him.
Our faith is given to us by God. He doesn't take our faith away. What people call free will results in wrong choices because the whole world is wicked; those who choose to follow Christ were already chosen and regenerated by the Holy Spirit and will spend eternity with God. A natural man is incapable of understanding spiritual things. Some of them want nothing to do with the Bible. Others think you must maintain salvation by your works. Others believe you have no salvation until you combine the works with faith.
Because it's not certain.
There are an awful lot of tragedies, wars etc that God has NOT prevented. One of the biggest stumbling blocks for unbelievers is, "if there is a God, why does he allow so much suffering?" Yes, I'm sure he has thwarted many plans, and things may not have turned out as the perpetrators wanted - but it is not certain that God will always do this. Sin has consequences. Someone fires a gun; very often that means that someone else is injured or killed as a result. Someone chooses to drink and then get behind the wheel; possibly they will end up having an accident and causing injury or death.
Is God always loving in your view?
God answers prayer; sometimes in the way that we aren't expecting, and sometimes we don't receive what we have asked for.
But I have never known him to intervene against my will. He didn't stop me from accepting various jobs that I wanted, even though he knew they wouldn't work out. When I started using birth control, after we were married, he didn't intervene and say "too bad; you're having kids anyway".
In Scripture, he didn't stop various people from walking away and not following Jesus. You've just agreed that he didn't force Adam to sin; neither did he say to him, "you want to eat that fruit, but I'm going to stop you."
You're right He doesn't save everyone. They're following Satan and He doesn't stop them. He didn't stop Judas from betraying Christ. Judas was a devil, but God is more powerful than demons. God planned for Judas to betray Jesus because that was how Jesus would pay for our sins. Before Adam ate the fruit, God had planned to send His Son to die on the cross.
Proverbs 16
4 The LORD hath made all things for himself: yea, even the wicked for the day of evil.
Romans 9
14 What shall we say then? Is there unrighteousness with God? God forbid.
15 For he saith to Moses, I will have mercy on whom I will have mercy, and I will have compassion on whom I will have compassion.
16 So then it is not of him that willeth, nor of him that runneth, but of God that sheweth mercy.
17 For the scripture saith unto Pharaoh, Even for this same purpose have I raised thee up, that I might shew my power in thee, and that my name might be declared throughout all the earth.
18 Therefore hath he mercy on whom he will have mercy, and whom he will he hardeneth.
Exodus 7
3 And I will harden Pharaoh's heart, and multiply my signs and my wonders in the land of Egypt....
13 And he hardened Pharaoh's heart, that he hearkened not unto them; as the Lord had said.
Exodus 10
1 And the Lord said unto Moses, Go in unto Pharaoh: for I have hardened his heart, and the heart of his servants, that I might shew these my signs before him:
2 And that thou mayest tell in the ears of thy son, and of thy son's son, what things I have wrought in Egypt, and my signs which I have done among them; that ye may know how that I am the Lord.
John 13
7 Jesus answered and said unto him, What I do thou knowest not now; but thou shalt know hereafter.
Isaiah 55
8 For my thoughts are not your thoughts, neither are your ways my ways, saith the Lord.
9 For as the heavens are higher than the earth, so are my ways higher than your ways, and my thoughts than your thoughts.