Why exactly do fixies need top tube pads?

Is it:
a: Because their owners all live in walk-ups and need to protect their shoulders?
b: For tricks?
c: Fashion?
d: Because the fixie crowd cares more about their paint than other groups, and are ahead of the curve of this practical bit of kit?
e: An homage to the awesome BMXers of 1985?

Please don't say that it's 'c', because to me, they look tragic. No offence intended.