My PCP said "unnatural" to not want kids

I got told this yesterday. Kinda irritating. She's a nice lady and gives good care, otherwise, so I didn't really say anything. but I was a bit shocked by her reaction when she asked during check-up yesterday, and I said I wasn't planning on kids. I'm a 37F. Is this still the attitude in medical profession? For reference, I live in a giant, northeast, liberal, metropolis. It's not like I'm in rural south or something....