I actually had a lot of fun with this one. Laughed a lot and thought it was some good old-school fun (and thought the platforming element...having to find out how to get from point A to point B...was great...a lot better than the modern trend of "enter room, shoot 20 guys, go to next linear room"). It's raunchy and very adult, of course, but I didn't really find it as offensive as some people seemed to. Considering I just bought a coffee tonight for the same amount of money I spent on the game when I got it, I'd say it's totally worth it.
But, yes, of course it's YMMV as to whether or not you'll like it. It's pretty stupid to say someone is wasting their time if they play a game you don't like. Just as stupid as saying someone is dumb for not enjoying a game you like. Everyone has their own tastes and gets different things out of different games.