I absolutely feel this way. Whilst I consider myself well-spoken, gregarious (after a drink ot two), and a decent human being, with the wherewithal to afford an encounter that might stretch to the $1000 mark for those with minimum requiements, I still worry about my weight impacting my experience in a negative way. To be honest, I haven't experienced any other sort of prejudice in my life, and so maybe I shouldn't be crying about it, but given that fat people are still openly criticized, I'm afraid that someone who likely puts a lot of effort into keeping themselves slim to please the majority of the pooning crowd with have less regard for those like myself who put butter in everthing they cook, and drink like Lords during the week-end.
As such, even though I have often considered it, I have refrained from visiting a well-reviewed, though currently non-advertising (and thus nameless) SP in the $700 per two hour bracket. Were I to take the leap, I'm sure I could be an engaging dinner companion, and a sufficiently adept lover that she could trick me into believing I was doing a good job

, but given that she wants to spend some time learning about clients before the encounter, I'm afraid of a performance on her part that doesn't meet with the glowing reviews, because she can't get into it.
Her perogative, of course, and I well understand the concept of YMMV. The result is, though, I am more likely to spend time with those who are generally well-reviewed, and who's site is lighter on the "let's get to know each other beforehand" content.
In the end, I have to consider the potential downside of missing out on someone who really appeals to me, and who's reviews lend credence to the belief that she would be an empathetic partner. I guess if your concern is getting the most liberal acronyms out of a SP, then there are places to find that, but why not give the girl of your dreams a chance? Y'know, I think I've talked myself into it! "C", I'll be looking for you next time I get to Toronto, and the belly be damned! Ah, but wait, I'm going bald, too. Sigh. Maybe there'll be a few "car date" ads on Craigslist to pick from, then.