I like making people feel insane
Why do you like making people insane?
It brings me joy to watch other people getting nervous.
Making others act or feel in such a way is wrong.  Especially if it is for your own pleasure.  I think you should get some help!
Sorry, but I just want to laugh at people's pain.
Laughing at peoples pain is inconsiderate. You should seek a professionals help because wanting others to be hurt for your enjoyment is wrong.