If you're upset because you're losing rep due to lack of posts, and self admittedly don't post alot, than what's the problem?
If you don't post, than you don't contribute to the forum. If you're not contributing, than you don't deserve therequired rep points needed to enjoy certain perks of the site.
If you're losing rep because of your existing post content, than that's another story as you're being judged by your peers as they say.
You get what you give and vice versa.
I hope you don't take this the wrong way..I'm hoping this will help you increase your rep so you can experience the site as a whole which includes gaining the knowledge of all the regulars here. Believe me man..this place is an encyclopedia with a personality, so don't lose out.