Eradicate hatred, intollerance, bigotry, suffering, pain, hunger, paedophilia, anger, violence, racism, sexism, terrorism, extremism, greed, dishonesty, serious illness, disability ... all the things that can make people's lives a misery.
Oh, and probably all the world's politicians!!! :o)
If it had Microsoft Windows on it or any other system invented by Bill Gates and his mates I'd give it a very wide berth. I have enough problems with my own computer.