It is so weird that this thread is going on right now - that TV show The Doctors was on while I was working out this morning and this topic came up. All of the doctors (if you don't watch - they have an OB/GYN, 'general' practioner, heart guy and cosmetic surgeon all on the show - at least I THINK those are their specialties) agreed across the board that the vasectomy was the wisest choice in any situation where both partners are of average health with no special concerns.
I think most husbands would choose the V over the alternative of abstainance as the form of BC.