God doesn't hate humanity and he gave us free will in the first place. He wanted to see whether or not we would choose him out of our own will. Half of the stuff that happens is because we had to be idiots and screw ourselves over
Well actually I probably would. If I was programmed to be happy of course I'd be happy about it, yeah. But it doesn't have to be black and white. He could maybe show that he exists, but he could still give us the free will to do what we want, just make us believe in him so that way he can save us.
Actually, he is showing that he exists. The Bible is God's word. In the book of Revelations it prophesied things that are currently happening right now, like what's going on in the Middle East. It's impossible for anyone that many years ago to predict that on their own
The thing is, that nobody would expect this large scale of a conflict to be going on thousands of years later. If you lived thousands of years ago in the Middle East would you think it would still be going on thousands of years later. Secondly, the book mentions that all of the surrounding countries will turn against Israel, God's people. Eventually they'll stand alone against the other nations.