One's outlook can change so much after one's 20s, that I think that many childless people who decide to become sterilized in their 20s will regret their decision later.
"Vasectomy at 28: One man's decision
Like many men, Toby Byrum decided to have a vasectomy to end his reproductive years. Unlike most of them, Byrum had his at the age of 28 while he is still single and childless.
Two years later, the Web consultant from Jackson Hole, Wyoming, has no regrets.
I view the next 15-20 years of my life as some of the best years Im going to live. I wanted to make sure those years were . . . going to make me ultimately the happiest person I could be, he told TODAY co-host Matt Lauer.
Hes not alone. Urologists around the country say that they are seeing a small but growing number of young men who are deciding to have vasectomies when they are young, all but insuring that they will never be able to have children of their own..." http://www.msnbc.msn.com/id/21115130/from/RS.5/