Okay, I'll be honest.... I thought about joining something like this when I was single.
I don't think there's anything wrong with it, as long as you go into it with an open mind.
I'm sure we all think of the stereotype of a lot of unattractive, desperate, or just plain creepy men oogling up us cute, young, things

And be prepared... there will probably be a lot of this. But I'll bet you that there will be at least a few "normal" guys who are in the same situation as you are... either there under pressure from family/friends, or just willing to try something new.
I say give it a shot. There's nothing to lose, and if it's really that bad, it will give you lots of funny stories to tell