Think it's funny that giving birth is often urged as an argument that women can take much more. Of course, they can if they must, but do you really believe there has ever been a woman in the history of mankind who enjoyed this extremely stressful act, which pushes the body to its extreme limits and sometimes beyond? I suppose if a woman would read this she'd laugh her ass off or react in the same indignated way as some of you guys do when derogatory comments about Pe from women are reported: "what the fuck do they know?"
So get your perspective right: Sure, there are women who can take more than 6" and enjoy it. No doubt. And I think much depends on the question whether you live a monogamous or polygamous lifestyle, i.e. as someone said here in an almost romantically toned, but nonetheless correct way: if you can grow together or not. your gf or wife will accommodate to your size, though it'll get harder for her to blow at a certain girth level. But there will be a level where pain outweighs lust and I guess in most cases that'll be under 7"