Imo yes yabu, unless there was prior agreement between you that he categorically would not go to a strip club.
Being annoyed or upset about it is one thing, having it change the way you view your husband is another thing entirely.
He had a lapdance, not a fling. There would have been no physical contact. He didnt pay for sex.
He went out on his stag with his mates, had a few drinks, a lap dance, a good night and went home.
You dont have to like strip clubs but people do enjoy them and use them.
I also hate the hypocrisy in general around dancers and strip clubs.
How many women are more than happy to woop and holler at men getting their kit off and dancing for them, or having a butler in the buff?
Not a fuck given there, but suddenly when its women its unforgivable and degrading. Yes there are problems within that industry but there are also plenty of dancers that enjoy their work and why shouldn't they?
Its not shameful to dance for money if thats what you want to do, and men shouldn't be shamed for enjoying that within a safe, structured establishment that protects their employees.