As it was told to me, size matters up to a point. After that point, pleasure is not enhanced. A big one may be a turn on to look at, but it is not more pleasurable.
I'm only relating what women have told me and I'm certainly in no place to argue with them.
SW-User
...why is "No" winning? During sex, yeah, size kinda matters. Sorry, but that's the truth. Too small...too large...they both have their drawbacks in the moment. Anyone who says otherwise is trying to protect someone's feelings. Buuuuut thankfully sex isn't everything.