Should I change my name when I marry?

I'm a gay man who is engaged to be married. The question has come up about whether or not either of us would change our last name and historically we've said no. We have just thought we would just maintain our given names. My fiance doesn't want to change his name and we both think trying to hyphenate our last names would be unwieldy and fussy. But as we've talked about planning a family in the future, it's occurred to me that I actually like the idea of sharing a name with my husband and my children. So, I've been considering changing my name. Somewhat ironically, however, changing my name means giving up a five-generation-old family name in order to take on the name of our new family. I don't mind this irony very much since my decision would be about taking on a family I choose rather than one I don't. What do you think? What pros and cons do you see for changing your name at marriage? Do you see any additional pros or cons for gay men considering this question?