Size matters for some women, for others it doesn't. You just can't speak in generalities, because of the individualities of female anatomy.
Some girls NEED them long ... Some girls NEED them thick ... Some girls NEED them bent ... and
MOST girls NEED tongue or hand action and you can screw them until the sun comes up and they WON'T cum no matter HOW huge, bent, long, thick or not you are and it's JUST a matter of anatomical differences. Just like some girls have multiple orgasms and some only have one REALLY big one. Let it go guys, I'm telling you
LET IT GO. If your woman does NOT have an orgasm through intercourse it's NOT a failing on the part of ANYBODY (or their anatomy), it's just a matter of figuring out what pushes her buttons and working from there ...
Look, if it helps any, think of God as being a sadistic son of a bitch and accept the situation for what it is, because if the situation were any other way women would bust as easy, and predictably, as men do.
I beat myself up for so long over this issue, I'm telling you, I SWEAR TO YOU, it is what it is, like taxes and death, it's just ONE of those THINGS. Some women come through intercourse and have penis size/shape preferences. The rest of us won't come except with particular types of attention no matter what, and trying to change things is just ... counterproductive and frustrating