Is it normal that my wife likes to hook up with strippers?

is it normal that my wife likes to hook up with strippers? I used to play in a band and often after shows many of us would go to the strip club. Often times because it was the only place serving alcohol after last call at a bar. My wife would often come with and hang out - and as it was with a large group of people there were often many other women in our group. More recently, she has taken to wanting to go to the strip club significantly more often and with just the two of us. One night she picked a girl on stage and suggested we get a private dance. I was intrigued so off we went. Once in the room my wife immediately stripped down to her panties. She and the stripper proceeded with a very intense make out session while I sat and watched and they rolled back and forth over top of me like I wasn't even in the room. This has since become a fairly regular occurrence. now there are regular girls she likes to visit and she has become a bit of a recognized presence in the club. Basically any girl she picks, takes us to the private room and has their way with her. It's usually just making out and kissing all over, but there have been a few occasions with finger penetration both to and by my wife. Is it normal that my wife behaves this way? Is it normal that it really turns me on? And is this normal for strippers to behave this way around a woman during a private dance?