Though I'm not shocked by any of that, it does make we wonder, like you; why? Or perhaps this is why I've always stuck to GFE/GND incalls. I enjoy (no disassociating!) providing that calm eye in the center of a man's daily or weekly storm of Life. Shower? No problem, fresh towels and toiletries (yes, you will be the first person to use a new un-wrapped bar of soap and a laundered, dryer fresh towel).
A provider may speak on some details of their personal life, but this is a relationship, one of sacred trust. So you should never hear talk of someone else or be burdened by someone else's trials. I'm here to listen to your woes, a confidant and venting option. Much like a bartender, but with different libations to wet your whistle.
I guess my point is, to put it plainly, what you pay me for is to be treated like you're my only concern. Ever was, ever will be, and always committed. And I take a certain pride in knowing I do well by a guest.
I assume like the different quality in character of a guest, providers can come in an ever greater set of hues and tones.
The trick is in finding a flattering color scheme.