IMO, the ideal size is something that is most in our minds. Women don’t choose the cock, choose the man.
They have their preferences, but vagina is all muscles. They can stretch (a lot!) and they can kegel till it’s freaking tight and firm. Even a pencil cock can make woman orgasm if she does kegel. Women are responsible for their own pleasure.. We are part of it, not responsible for it. Drive her crazy about you and learn with her what works best for both of you.
Anyway, IMO, shallow pussies may have difficult to get an 8” cock, but it’s workable. Medium and big pussies will take that with no major problems, even a 9”. And let the size queens for the monster cocks..
I think ideal penis size is something between 7.5” and 8.5”. Some women will prefer less and some will prefer more.
About girth, I would say 6” to 7”. But again, its easier to women get their pussies tight than for us to get our cocks bigger. They can progress in weeks what take years for us. Vaginas are muscles and they really can work out.
I had a girlfriend that complains that I am too girthy for her. For her, it’s better a girth less than 6”. Our relation last 3 years and even at the end of the relation, girth was a bit of a problem.. Lots of lube to make it work as it should. Her preference was a long and thin cock. See, there is no pattern. I was the opposite of her preference, having a 6.9 x 6.2. But we worked our way and sex was great. We were happy with our bodies and sex life. The motion is more important than PE, for sure. Make her cum. Use all your weapons, be a lover not only a cock.
My goal is 8” x 6.5” (BPEL x mseg). It’s what I think would work best for me as a lover.
So, what the guys here consider ideal?