Why do most doctors discriminate in medicated births?

I’ve noticed my personal ob and others online have been very condescending towards people who opt to have as little intervention as possible. One story read that on this woman’s hospital tours she asked if having an iv was hospital policy and the nurse replied with “you’re birth center parents” or something like that. And when talking about labor with my ob she told me to just go ahead and get the epidural that she’s been in the field for years and everyone wants to be brave... why don’t people take births with no interventions seriously???