Why do people block after losing argument?

[Twenty2]

I never understand why anyone argues if they can't accept their loss. I personally don't argue unless I am winning and even if, by any chance, I end up losing I accept my loss.

[shushhhhh]

Pride. Many people want to spread their points across and be right in the situation, and in their minds losing an argument takes a hit to their ego

[In_Trance]

People get butthurt when they're wrong

[Thatoneasian]

They petty bitches