I also thank God for everything. But, if God created the world and everything on it, like the man and the woman, didn't he know that we would have a bad and sinful side? Didn't God know that he was creating us with that defect, and even so, he gave us free to choose between good and evil, when he did know that maybe we wouldn't do the best for that perfect world? So, I think God is also a little bit responsible for the world he created don't be so perfect in the present.