I am too!
You know what...even though I'm a guy who went to Vegas for my bachelor party, I never even knew anyone who ever did any of the things you're talking about.
It is Immoral and Degrading
Not only do I find it immoral and degrading for the women who do this, I think the people it really degrades most are the men who participate in it.
I'll never forget the one time I did go to a strip club with another friend on his bachelor party that the whole time I felt embarrassed for my fellow gender-mates. These places exhibit not just T&A but the worst behavior of men you can find anywhere. It was ugly...
In other words, in my opinion, it isn't normal...it's pretty sick.