I am doing the reverse.
I've been a pediatrician for 24 years, and I am switching to aviation.
Playing with cute babies and getting paid for it certainly was nice, but I've done it for a long time, and I don't feel like I am being challenged intellectually anymore.
But the biggest gripe is that I have no control over my schedule. 2-3 patients are scheduled at the same time to see me, and they're forced to wait a long time. I never feel that I have enough time for my patients.
I will miss the deep connections I made with the families over the years.