Condoms are an issue and do make a difference, some can be quite tight. Add to that the fact they do remove some sensation and yes, condoms do affect duration. I dont care what any study's results say, for me it makes a difference (frankly I enjoy having more control over it).
I see no point in jerking off before seeing an sp the second orgasm pales in comparison to the first. In fact sex itself isn't as good the second go around, there's a significant loss in sensitivity.
Not too mention I like lots of build up, foreplay, touching, kissing before actual oral sex and sex - so reaching orgasm halfway through a 2hr session can mean unfinished business.
So my preference is to last longer anyways - but it's better by switching up positions, activities, or just straight up taking a break (which is definitly preferable with an sp I can get along with so I can have more cuddling, talking and laughing). If they actually want me to cum, I'll cum, it's not hard. Just a matter of "flexing" and a certain angle in a missonary (or mish variant) position and I'll pop with a minute or two - it's quite easy in fact, albeit not as good. In fact out of the half dozen sessions I've had only one involved msog and it was because I was so out of shape (physical endurance wise) I was too embarassed to say "yes I need a break" when I was asked and I just did that trick instead to get my break. I cannot however keep myself from orgasm, if it's gonna happen, it's gonna happen.
Also add in some sp's encourage a more porn style sex ie hard thrusting and whatnot. Sure this is great if the sp is either into it or doing a convincing job of displaying she's into it (I'm always assuming you guys are faking, I'm not gonna lie, so I'm not out to impress anyone because I flat out believe I wont to begin with or assume off the bat you've had better - lol takes any pressure off! And frankly I like the role reversal of now being that one that's getting enticed to come back for another session and add to your business), this really can add to mental stimulation and the overall "fun" if mutually enjoyed. But hard thrusting isn't good in and of itself infact it can be detrimental to reaching orgasm I find, as now I'm not only aware of different sex sensations, sounds and things I should be focused on, but also strained muscles and losing "footing" and have to quickly reposition and such.
Not to mention, some sps may have a problem with kissing during sex, or even being physically close during (yes first one I tried was like this) and THAT makes a big difference. Hell spent two hours with an sp that kissed like crap and so I was basically mentally checked out from the word go.
Do I jerk off, yea plenty. I live in a camp that is 95% guys, the attractive women get stared at like meat so much none of them are happy anymore either (not saying i blame them either) and dont care how hot a woman is, if she isn't smiling I'm not interested. What else am I suppose to do. Besides it helps me sleep. Add to this I have a good strong grip because of my job and yea I've probably lost a bit of sensitivity from that alone.
Guess what, if you haven't figured it out by now, I'm a bit of a female when it comes to getting off. Sure I like sport fucking as much as the next guy. And yea the primary reason I'm contacting an sp is I DO wanna get laid. But want makes a meeting really memorable and worth it, and "holy oh my god that was great sex, please stop the world from spinning I need to find my socks!" - is being able to give and get some affection, being close to someone, and yea have a connection with someone for a couple hours a la "girlfriend experience" that everyone likes to put on their web page but out of the 5 sp's I've tried only 1 actually did it (the first one could be someone else's cup of tea, just not mine though - the other 3, not even close definitly just wham, bam, thank you maam). Cause I frankly dont want a relationship anymore, people will eventually start taking others for granted, I hate it when it happens to me, and I find it despicable when I do it to someone else. But g'dammit do ever I miss human contact. So guess what, without that mental stimulation it can make a difference in getting to a natural orgasm. and I'm willing to bet there are a few more guys that fall into that catagory of wanting a bit more than walking through the door and saying "me fuck now".
In that study, how were people partnered up. Was it with a partner they were familiar with? Very familiar with? Or strangers? Went out with one woman for 2 years. After about a year she could get me off within minutes of sex as she knew exactly where the buttons where plus how and when to push them. When we first had sex I was so nervous and worried about doing a proper job and trying to pay attention so much about her body so I could read w/e signs may be there I ended up not having an orgasm. So yea there are so many damn variables that it isn't even funny. Definitly way too many to say 491 couples had sex and avg time is 6 mins. Or if a guy doesn't come in 7-15 mins he's an asshole cause he's pulling some stunt to get free time. Thanks I should stop reading this forum cause now I'm gonna be self conscious of something else and probably get laughed at again by an sp with an introductory email saying I take too long to cum.