I really don't agree, there's plenty of stuff people watch and get turned on by which they wouldn't up close and personal. In fact, the scenario you describe is exactly one of them: there's plenty of guys who watch 2-on-1 (MFM) porn but couldn't handle it IRL. but also, it doesn't mean the inverse is false. In other words, there can be things you aren't turned on by watching in a video which would turn you on IRL. I'll give your example of water sports: i would never watch a video, but if in the heat of passion some girl wanted to do it, i would probably find it hot.
I wrote a similar post last night on a slightly different subject. the only quibble I have is that it depends on the specifics. What if the two invovled were {insert the name of whatever girl is your ultimate fantasy right now} and the price was $50. Of course that example is rediculous, but there's ground in between. Although I'm sure in the instance you are tlaking about, they not only wanted it their way, but at a price which should have been your way, and when that's the case i 100% agree with you.
For the right set of circumstances I might do anything, but I'm more talking about what my tendencies might be.
Again, I disagree. I'll bet half the guys (or much more) who do this have a drink (or 3) before or during sessions with girls. They didn't come up with in vino veritas for nuthin'. Think of what the definition of "inhibitions" is. Don't tell me there's never been a girl who you assfucked who liked it, but had to take something (liquor, pot, xanax, whatever) to get "in the spirit".
Again, I think that is two different things. People also like doing things when they get a pile of cash. Do they like what is being done or do they like the cash? Do people just like being crazy and intoxicated or do they really enjoy what they are doing?
Assfucking also has to do with relaxation so in your example it might really help. I'm not sure how doing X is going to make me want a guy to suck my cock if I wouldn't want him to otherwise.