>Some people are so poor, all they have is money.
Once you reach a certain level of wealth, I suspect relationships are more important for happiness than accumulating even more.
If there was a button you could push that would give you $10M, but also cause many thousands of people to constantly express their hatred for you online, would you push it? Would the average person choose to push it? How would it change their expected happiness?
A great thing about a pseudonym is if I don't like how an argument is going, I can just disengage and pretend it doesn't exist. Internet discussions are like sand on the beach. Pick some up, let it run through your fingers. There's nothing special about that fistful.
I wouldn't like the dilemma of either choosing to have a backbone, and being in constant confrontation, or choosing to disengage and ceding the frame of the discussion to someone else. With a pseudonym you're more free to be wrong or just stop caring.