>>3333622Vaginas can double in length when a woman is truly sexually aroused and with a guy who she's very attracted to. They have a "deep spot", the anterior fornix, that's just as pleasurable if not more than the g spot. Even many small women need a bigger than average penis to get this kind of full, complete pleasure.
https://www.glamour.com/story/finding-my-anterior-fornix-unlocked-best-orgasm-of-my-lifeThe clit and g spot matter a lot, and they're not deep inside, but that only reinforces the fact that size matters because a thicker cock will do a better job of stimulating those. The nerves of the clit run deep in kind of a wishbone shape around the vagina so thickness will put more pressure on it from the inside. The cute little pink nub on the outside is only the tip. Girth for the clit and g spot, length for anterior fornix. You don't have to be packing some kidney smashing 10 inch cock, that's porn freak stuff. 6.5-7 inches of length with some good girth can suffice, but that doesn't mean she can't take more, or that she couldn't do with a little less. There are still differences between women. Once a girl experiences this with a man who is both big enough AND knows how to touch these places insider her (which some women don't even know they have, sadly) she becomes a size queen.