A quick and simple vasectomy is far more superior form of birth control in many ways...provided you truely have no desire to have children in the future.
First off, a vasectomy is an outpatient surgery. Get numbed, sliced, sewn and out the door you go. You are recovered within a month. Most men after a couple months time are "back to normal".
Birth control pills for women are a biological/hormonal method. They are far more at risk, are are not as effective as a vasectomy.
Besides some discomfort for a couple weeks after a vasectomy, I've heard of very few men complaining about side effects. The pill on the other hand, along with the depo shot, and the norplant implant have many various side effects ranging from the annoying - like head aches, to the dangerous - birth defects if a child is concieved while the mother is on the pill.
Also, the pill is very dangerous to women who smoke.
All in all, the snip for the men is the way to go.