@writinglover001 Well bud let me tell you, I withrew from Physician Assistant school because it got too much, and now work as a pharmacy technician looking to go into nursing. I wasn't enthusiasctic about the PA profession but still got in, but ultimately didn't feel motivated enough to go on.
Even if you go to med school, unless your heart is in it you might drop out, and with loans too. I don't know anything about planes and flight attendents though I hear they have it rough too, because they are basically the service industry agents of the air, which means there's a lot of stress to please the customer, but unlike restaurants you will be with mean customers for several hours and will be away from home for days at a time.
I would say do something you feel passionate about and will pay the bills, but remember: ever job is hard, so balance the trade offs and the pros and cons before you make a choice. Best of luck! :)