I will firstly say, I am not trying to flame anyone nor belittle any male here, I just think you need to get over yourselfs.
Men in general seem to foget that a woman has no real nerve ending inside the vagina, our nerve ending are at the opening and for mabye a couple of inches inside.
Your right a huge cock might attract some woman but from my own experience, I have to say no thanks, sex is suppoded to be fun not painful. I am 5'5 and after 4 kids, anything over 7 inches is extremely painful. At the time I didn't think anything of it, but I realised afterwards that I had been unable to grip the cock with my muscles Like i do with my own hubby. The man was really understanding about it all and even took it as a compliment, but for me, I was in major pain the next day.
So yes size does matter, but not the way you think. I'd say nine out of ten ladies here would state, if given a choice that they would prefer someone with girth more than lenght. I would love to find a nice thick one

but if you put anything over 7 inches I'll start to cringe

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Everywoman's body is different, yeah maybe your wife can take 10inches maybe she can only take 5inches. but at the end of the day if your SO can satifiy you who cares????