Gods creation?

God is the most powerfull and almighty and can do anything he pleases, so why doesnt he just destroy the devil and have peace on earth, and make everything perfect? Why does he have to play games with us and test us for 80-90yrs then decide if he will give us a p into heaven or not, why does he make a imperfect creation why doesnt he just skip all of the trouble and create perfect beings, what is he bored and need entertainment.