Morbidly A Beast:
I can’t really give a list of pros and cons of being a fat person, all I can say is that it felt right and part of me. Like those kind of pros and cons are sort of dismissing to the existence of fat people.
Some people forget fat people exist outside of kink. It's like asking "What are the pros and cons of being muscular? Slim?"
It's a loaded question that removes humanity from the subject in question. Literally objectifying.
A better question would be "Should I get fat?" And unfortunately, that is a very subjective answer.