Ask for divorce? It is very easy to say so from your comfortable position. I also can say get a divorce if I was in your shoes. But we have everything in common. From the house through the furniture untill the children. In addition, a divorce would be a big wound for all. Not just for the divorced but it also affects the children of the couple.
I don't think that fulfill a fantasy is worth for divorce. If my wife did not know cook ravioles the way I like them, no one would criticize me for going to eat them somewhere else that prepare them as I like it. Well... what I did was more or less the same. I don't think it deserves a divorce.