God does not allow this pain and suffering or cause it, man does.
God simply gives us free will, however he will intervene if we turn to him. He will work in ways to help you through anything. However God is also just and God does have character hence why we have what is called Gods wrath. He needs to punish because he hates sin so much.
How do we know that some of the evil doers were not led into the hands of the police through the hands of God. What you do comes back to you ten fold.
Well for example, this case with the three girls, God kept them alive, and healthy to an extend that they stayed strong. Look at the suspect,, he wrote on his fb page just days before he was captured..........God is good, miracles do happen. Ironic really.
"dont boast about tomorrow because you never know what the day will bring". Proverbs 27:1
God is not going to force anyone out of free will, however if you repent sins he will always forgive and start you on a new path.
Actually we are the ones not taking care of our planet, God gave us the tools to keep our planet in tact and we humans used the tools for our own selfish purposes, to destroy.
We are destroying Gods planet, so God says fine you want to destroy and sin, then I will allow you to dig your own grave. And they always do in the end.
He allows some to go through trials and tribulations for a learning period, which in return makes us stronger and gives us the courage to go on and make this planet that much better.
So with that said, maybe when we say "lets get together and heal the world" we should act on it. There are so many false prophecies that entice people and turn them away from God, and once again its their free will.
Here is Gods word to some of those false prophets
2 Thessalonians 2:11-12
11 And for this reason God will send them strong delusion, that they should believe the lie, 12 that they all may be condemned who did not believe the truth but had pleasure in unrighteousness.