As in all things, there's alot more latitude when you're tall. Tall-and-skinny and tall-and-ripped can both work for the individual. Shorter guys really need to bulk up to avoid being completely physically insubstantial. And unlike tall skinny guys who can successfully experiment with silouettes, those of us who are squattier in stature have to wear fitted clothes head-to-toe.
I cant recall meeting a short muscular guy who didn't have SMS. They also have a high likelihood of having a very disturbing cruel streak. Besides, bulking up just makes them look shorter.