In the series Seinfeld, why does Jerry not change his character's name?
The similarities between the real Jerry and the fictionalized Jerry are subtle. Since his life as a comedian was the show's core, there was great reason to tie the real and fictionalized characters together. They did so using the name of the character.
Also, I am sure there was a bit of ego involved.
I mean, the show is called Seinfeld. I think much of the basis of the show is that it is an exaggerated interpretation of his own life. A viewer is meant to believe that the Jerry we watch in Seinfeld is the same Jerry we see doing stand up comedy.
According to a documentary I watched seinfeld didn't change his name because he has based it on his life, he also used the series to showcase his standup comedy talents