Why? Is there some type of correlation between how much money you give to this web site and a person's character? If you've NEVER given, and you get a lot of use out of the site, that's one thing, but don't hate on those that were lucky enough to be grandfathered in. At the time, that was just the the way it worked.
I think the discontent comes from people that paid $15 one time harping on people that have paid it 2, 3, 4 or more times.