How about the athletisism of it?
What about it?
Another major reason why I don't want to be huge is because of the physical fitness aspect of it. It's very unhealthy and bad for your heart and other systems in your body.
Link me to peer reviewed articles that state this.
It's a hinderance for sports. For endurance sports like hiking, basketball or bicycling it is a major disadvantage. For things that require flexibilty like yoga and martial artsit's a disadvantage. For rock climbing it's a disadvantage to be carrying all that extra weight.
Great, but I don't care about any of the above activities. In fact, I don't like most team sports. Thus, being big really wouldn't matter unless you're into those activities. Correct?
The only things it's good for are sports that require pure strength and force. Like American football, strongman competitions and wrestling matches. Aside from that, when you are picking your teammates you'd better not pick the fat boys.
Exactly, and some people are into those sort of sports. Some aren't. To each their own. Can't you fucking understand that?