Being as bored as I can get I will frequently catfish and I've been doing it for many years now.
Why did you become a catfish?
I don't want people to know my true identity
You shouldn't pretend to be someone you are not because what  if you meet someone who is a great friend? Then you have to tell them the truth about who you really are. They won't trust you after that.
I'm fine with not having friends. I don't really care about others.
Well you're also hurting those who get to know you and think they have a friend, only to find out that you're lying to them. Would you want to have your feelings manipulated with like that?