I really wish my partner would insist on a vasectomy, since it costs less, is easier, less risky, and because I'm a tad freaked out about the thought of surgery myself, but alas. He has offered, but I've insisted on having a tubal myself.
Really, it's probably for the better anyway, for a couple reasons...the first is, I'm not naive enough to say us being together forever is 100%. And when we met, he wanted kids and only started realizing he didn't because of me...so I'm not sure that if we split up and he met someone else who wanted kids, that he might not change his mind again. And the last thing I'd need is an ex-husband and new wife who hate me because omg i took away their chance to have teh baybeeeeeeez!!!111oneoneone (I'm not worried about me as I've already promised myself he's the last one for me--which I figure will hold true; if he died, I wouldn't want anyone else, and if he dumped me, I'd be fed up with men and relationships)
The second reason is that...well....I think I'd be more likely to convince the doctors. He'd probably blurt out something like "I don't want kids so I can have more money to spend on computer stuff!!!" and they'd mark the little "waaay too immature for this decision" box, or he would get flustered if they started questioning him and not know what to say and come across as immature or indecisive.