Look, MB isn't for the "gotta have the hardest game that will continually challenge me for the next three years" crowd. There are people on Pinside that only like complicated modern rule sets, and games that provide a high level of challenge and ass kicking. They tend to wax on about AC/DC and Iron Man if you're having trouble spotting them.
And that's fine! Totally legit viewpoint. Probably the wrong game for them. (I'm generalizing, RobT is an Iron Man fanatic and he loves Monster Bash for instance.)
You just have to be careful that you don't let one group overly influence how you feel about games. If you belong to that crowd then maybe put more weight on like-minded people's thoughts. But there are lots of ways to own and appreciate games. I tend to like a balance personally. I own Star Trek Premium, not LE, but same diff. I think my next game will be Metallica, and I have Tron, I like fast and hard Sterns just fine. But I also appreciate the awesome theme and enjoyment that is Monster Bash (same reason I own Scared Stiff).
If after 20 games you don't find Monster Bash to be your thing then honestly it probably won't ever be. Trying to stack everything right is a challenge, but it's not a "hard" game with a ton of depth to be revealed, and frankly 20 games is more than enough to already be in love with the theme or not. I can hear the music while I type this.