This is my basic belief.
There are only three kinds of stupid people.
People who ruin the world with their stupidity
People who do try to nothing to effect the world
People who try to fix the world even though they know inside that they will do nothing in the long run
Yes there are people in between but I've chosen this as my general rule of thumb. It's your choice which stupid you will be. And if you can't see any imperfection in the world to try and fix, you're not stupid, you're insane (in a bad way).