I feel like I'm asked this question surprisingly frequently, often by family and occasionally by friends, acquaintances, dates, and even patients. Maybe it's because I come from a family of doctors, or because many of close friends from my first degree were pre-med because nursing/pre-nursing on my campus didn't really exist.
I can say with honesty that I've never come home from a shift and thought, "I wish I was a doctor." However, there have been a handful of shifts where I've come home explicitly thinking, "Holy crap, I'm so glad I'm not a doctor."
I briefly worked in x-ray during nursing school, and I found that some x-ray techs expressed regret that they hadn't become physicians. However, I think x-ray differs from nursing because there aren't as many opportunities for advancement (vs. nursing, where you have the option become an NP, CNS, etc., along with many non-clinical paths).
I'm just curious to see if other ANers are faced with this (well-intentioned but occasionally insulting) question. What's your go-to response?