Well, if that's your sole reason, then I'm sure there are a whole host of other jobs you wouldn't support a loved one for choosing either.
For example, working in a bank or as a cashier where someone might come in and put a gun in her face. Or as a flight attendant -- some people seem to feel it's perfectly okay to drink more than they can manage and get rude and even physically abusive with flight attendants. I suppose you wouldn't want her to work for any government agency either -- people are always yelling at civil servants.
In any business where you're dealing with people, you're going to encounter rudeness, disrespect, chips on shoulders, etc. In any business where you're dealing with cash, you're going to face the possibility of someone robbing you.
Over the years, I have known quite a number of cops and paramedics -- and frankly, I wouldn't want to have their jobs. If I encounter someone who's rude, plastered, has a bad attitude or bad hygiene, I can just walk away. I don't have to deal with him. But imagine the situation cops or paramedics are in! They don't get to choose.
You have it all wrong about our business. If an SP is selective and smart enough to cultivate a healthy base of regular clients, then she will live in a world you can't even imagine. Most of my friends _aren't_ in the business, and every time I listen to their horror stories of what they have to put up with at work, I shudder. And then I realize how lucky I am. Geez, I've got guys insisting to me that the most important thing to them is my pleasure!! How many jobs are there around like that???
..c.. ,,,, joyful c...