I'm with you. I'm fixed, no biokids are in the cards for me. But I do have a step kiddo that I love and support financially h:

For me the reasons were a little different:

- World is going to hell in a handbasket, and I view overpopulation as one of the driving factors
-Bad genes, high likelihood of heart defect and some mental issues
-Why make more babies when there are millions of children in the world already needing parents. If I decided I really wanted kids in my life, I would adopt
-Having a now near-20 daughter, my wife wasn't really interested in starting over at 0 and being in full-on mom mode for 40 years straight.

Funny thing though, when I got fixed, nobody in my family said shit. I guess it helps that my brother has two little girls, so they already have their grandkid fix.