Dealing with Childfree Stigma from Family Members

I went to visit my family in NY over the holidays, we got to talking about me having kids, I asked my dad if he was upset that I wasn't having kids... and he said he was. I felt really bad about that, he KNOWS I have endo and if I chose to have a kid, it would be high risk... a possible result would be a still birth or miscarriage. However, I CHOSE not to have kids, my bf doesn't want kids either... we're happy with our dog. I'm feeling sad and a bit angry that he can't accept the fact that I will never have kids. I'm just tired of getting stigmatized for being childfree.