No I haven't. My family invited me to watch it with them soon, in conjunction with my birthday on the 9th. I already felt that, if I was going, I would wanna watch it with my father (who's also 50 by the way) :-)
I don't mind that it's one of your favorites. I call it a guilty pleasure because I don't think it's a legitimately good film. There is a difference between quality movies and entertaining ones. I felt like the acting was enjoyably cheesy, the monster and parasites very cool, and the shaky cam gimmicky but fun nonetheless. I only have one true gripe with the movie, and that's the Rob-Beth romance subplot. It just felt like it was sort of distracting. Regardless, I like the movie, and I do own it.