Can I present an opposite view? I think a really large post count is...embarrassing. I'd automatically calculate the average of how much I posted per day since the join date and then I got really disappointed at myself and stopped posting because anything above a 2-to-1 rate seemed so, so wasteful and anything above 10-to-1 felt absolutely awful. So, yeah...
Yeah. I'm sorry Triple_R, but um, please no.
Less "personal confession"-y, I think post count is far worse as a system to rep, for reasons others already suggested.
Speaking of which, I didn't recall having that many green dots by the time of your join date...? In fact our Asuki birthdays are just a month apart! You're making me feel old. :<