I did medevac flying in Western Canada, now 747s for an Asian airline.
Although I had a good time, helping people, challenging flying.... I'll take an airliner any time. Comfort, safety, 4 engines, apu, steady schedule, money. You get none of those things flying medevacs. Being on call gets old real quick. Not to mention being awaken at 4am, middle of winter to fly into some !!!!ty airstrip with non existant snow removal and no refueling facilities. I did 4000h of that kind of flying and that's better left for young dudes aspiring to move on.