This is no surprise at all. My brother did not and my son and his partner have chosen the same. Makes sense to me.
If only women had made this choice 60 years ago.
I made it 47 years ago....by age 15 I knew I didn't want any sex trophies.
I made the choice at 17. No way I could justify saddling the world with my offspring.
I made the choice in first grade while my girl friends were playing with kindergarten kids and dreaming of one day having their own babies. My father was (now retired) an ob/gyn with his office attached to our house. I swore I never wanted to be like any of those women with the big bellies hobbling around my porch.