I don't know why, but when they do it on the Simpsons, it bugs the crap out of me. When they do it on Family Guy, I don't really mind. In fact, they manage to make it funny.
Personally, I do like Herbert, and I think its great pedophiles have an unflattering characature of themselves.
I fell they shouldn't use him as much, but in cases like Blue Harvest and Petergeist where the character actually did something besides making passes at everyone was some of his best work.
But yeah, I can see fans complaining about him finally getting their revenge when someone on the staff decides to kill him off like the Caddy manager and The Vaudville guys. Too bad they don't do that on the Simpsons...
oh wait..... but then they do it with good characters. *&^&% Cletus.