Not everything is binary. Other people have different motivations than you. Not everyone does an Ironman for bragging rights. Not everyone starts a company for bragging rights.
Reality check: how many people do you know that climbed Everest? When you claim to know why most people do something that you actually have no clue about, you look like an incredibly arrogant douche.
"Note, I'm not talking about everyone that does it, just most people."