Great thread. Lots of interesting perspectives out there on this subject.
In my opinion, lengthwise, anything above 7-7.5 is probably just window dressing for most women. You can definitely get the job done with that much (or really anything over 6, IMO). After 7.5 you’re gonna have to take it easy on some chicks unless they get off on cervix tapping and/or pain. Many can eventually accommodate more length over time, but some just can’t for whatever reason. Even pre-PE I had a few lovers/girlfriend’s who I could never really pound like I wanted to even after months sleeping with them. My current lady friend can just take all of me (I’m 8.25” now), but that is with lots of warming up and me being very gentle as I get deep. I occasionally can fuck her hard for short periods of time, but pretty much only after she’s already had and orgasm and only from behind with her laying flat on her stomach. I think that position really just prevents me from going as deep. The sex overall is great, but it kinda sucks to not be able to let loose from time to time. I’ve really hurt her a couple times by getting too into it. So no more intentional length work for me!
I don’t know what girth would be too much. At 5.75”, I have had to ease into a few girls after a good warmup, but even the ones who seem a little nervous about it can take it and generally love thickness. I’m not really into anal, so it doesn’t bother me that only 3 girls have ever even let me try (only two successfully). Oral is hit or miss, but I do notice that they get tired more quickly since I’ve grown. I’m aiming for 6-6.5 because that’s what I want, and I think most women would be able to handle it or at least work up to it.
My guess is that being over 8+ by 6.5+ could be problematic for enough women for me to lose some of my enjoyment.