But then there is something about the human mind in general that makes us think the more the better.
This is so true!
I realized reading this thread that I have no idea how long we have sex. I'm not aware of time passing at all.
A lot of how long we go depends on how gentle or rough TheBoyfriend is with me because we're mis-matched size-wise. If he's bottoming out a lot, I can't keep going for a long time. If he's bottomed out a lot the day before, I'll often be very sore deep inside and I don't want to have sex for a long time because I'm sore from the very first thrust. If we haven't had sex in a long time, his girth will also make me sore a lot faster than usual. It's proof that more isn't always better if it's just too much.
I can enjoy sex with a man who has an average sized penis for hours and hours, day after day and love it. I enjoy quickies, because a little sex is better than nothing, but I'll always prefer more.