Don't you just hate it when you read a post, start thinking of a reply, and then read the current replies and everyone has already said what you wanted to say?
That's the case here for me. I don't post very often but I read PM all the time, and I love it. I love reading what other people do, lots of stuff about Perl, and programming in general. There is a good sense of community here as well. All these things keep me coming back for more. I even had someone wish me happy birthday recently and notice I hadn't logged in for a couple of weeks (oops). That made me want to update my homenode, so I did.
Now if I can just motivate myself to post more. :)