UGH! No...thankfully I haven't.
Actually if anything...I have encountered the opposite. People saying things like, "Oh then it's still honeymoon period" even after finding out we've been together 8 yrs/married 7 yrs because we don't have kids. And while that's annoying too, it sounds a little more like "oh so you guys are still happy and having tons of sex" which is fine with me ;-)
I have also encountered quite a few men (especially when I was single) who were really happy UNTIL the kids came along, and then started to feel pushed out by their wives. Sometimes literally in cases of prolonged co-sleeping. Other times just ignored while the wives lavished attention on the kiddos. So in that case (while it's unfortunate and 100% wrong) I'd imagine single women would have a better chance of "nabbing" a married father...kwim?