My wife and I both share this fantasy, but ONLY AS A FANTASY. We use it in our lovemaking and sex talk, but would never IN REALITY act on this scenario. We have used a Lexington Steele vibrating dildo on her and she can take almost the whole thing. She would freely say (and does) that she prefers my cock. I guess love conquers size every time. Those who go down this path for real, I would say, do so at the risk of their relationship. But, as the French say, chacun a son gout...to each his own.