Way to go. I had mine done in my early 30s, before I even had health insurance, and it was probably the best financial decision I ever made. that was over 30 years ago, and I still have no regrets. But it may have been easier for me, as I still don't like kids.
How "comfortable" it is seems to be dependent on the skill of your doctor. Mine was pain free during and after, but I know it's not always like that. My brother (after blowing his first two million, i.e. having two kids) went to the same doctor as I used and also had zero issues.
Heh heh, issues....