There is going to be a technical “optimal size” that a higher percentage of women would cite as ideal. As to what that size is, we’ll likely never know. For a whole host if reasons, most people really don’t know what it is they want. Mostly, people know what they’ve been conditioned to think they’re supposed to want, and not supposed to want. How that interacts with what they actually do want is unpredictable and often messy.
The next question to ask it’s if we’re actually after the size that will best please the most partners, or the size that will impress and excite the most partners. I suspect the two are not the same.
Lastly, while I think this is an interesting exercise from an academic standpoint, but not too useful in practice. I don’t know of any guy who selects his partners based on penis-to-vagina ratio. It will play it’s part in sexual compatibility of course, but if you’re the ideal size for 19% of women rather than 21% of women, is it going to change how you interact with women? Unless you fall on opposite ends of the preference spectrum, it shouldn’t make too much difference.
I know it’s an awesome feeling to find that girl for whom you have the magic dick, that hits all the right spots and is absolutely perfect. I had one of those, once. The sex would melt your face, but it didn’t make her any less insane, neurotic or toxic. I think it has as much to do with shape as size, and even more about style.
I suspect from personal experience that it’s probably something like 7x5 bone pressed, for the largest number, which seems to track somewhat with the info available. My own sample size is quite limited however, and some have varied wildly from that number. I think my wife is more like 8x7, which is part of why I’m here!
Starting Stats Jan 2019 - BPEL: 6.75", MSEG: 5.875"
Now - BPEL: 7.0625", MSEG: 6.25"