Well, a couple of things.
Honestly, I love it when new members confuse me for a staff member, it's flattering. But I can see how some people find it annoying, but it doesn't happen to me incredibly often, so I don't mind.
I'm rather fond of the idea that I have contributed to the general operations of the PC. Even though fifteen dollars isn't a ton, it had to of helped fund something.
I like having a username that stands out when people see it. It makes me feel special. XD
I absolutely love the new benefits. Even though this area hasn't taken off yet, it's still fun when people actually post. And I adore having a larger PM box, that way I can put off having to empty it. =D