To the original poster- strip clubs will always be a divisive topic since strippers and stripclubs vary wildly by geographic location.
For example, a high-end strip club in Las Vegas with 100 high-end girls, no contact dances only, expensive cover charge will have a totally different experience and quality of employees than say Ralphs Boob Shack off Highway 62 with 7 "dancers", VIP rooms with beds/doors, and one dancer featuring all her teeth.
So everyone is going to argue based on their own biases/experiences or at least what they've heard of other's biases/experiences.
That being said, it really doesn't matter what you feel about strip clubs. If it's a relationship boundary, then that is what it is. It could be reversed that you don't like Tupperware parties.. i.e. you believe women use them to gossip and tell secrets about each other's husbands and whether or not this is the case with your wife's parties, you can express you don't feel comfortable and her participation is an issue for you.
This can go for book clubs, sporting events, golf trips, fitness conventions, etc. etc. etc. In relationships, there will always be individual activities that a spouse may not feel comfortable about. It's not about proving them "wrong" moreso than it is to understand it bothers them or makes them feel bad, so we then have to decide if we can find a happy middle ground, or decide if we can make sacrifices to keep the marriage happy and comfortable.