Good post. I strongly agree with what you're saying, although I'm not playing anywhere near you cash levels.
I saw a suggestion that if you're spiraling, you take a 1 week break on
pokerstars. I am going to try this tactic because I think I've noticed the same thing. It seems that some people have noticed that PS rewards players that they think *might* be thinking about stopping due to bad beats, so they change your handicap setting if you're gone for several days and they think they're losing you.