Let it go.

I have!

artlady is right on one fact, bachlor parties are usually set up by the friends. And usually the friend sets up the kind of party the friend would want, not the kind the groom would want. It could be a little awkward if yours is the only "no" vote on the boob show, groom or not. If he knew you found them offensive, and was cornered into a boob show party, then he may very well have kept his mouth shut for 10 years. My advice, let it go. If you are still into each other after 10 years, don't kick the applecart. If you make this an issue, you can both only lose.