Well theoretically there a 1:1 approximate male to female ratio in this country, although you wouldn't know it. Females here seem to have a way of making it feel the men vastly outnumber the women. Sure women probably live longer than men but I'm not sure this fully accounts for it.
Yeah I do think some women feel they are entitled to a certain criteria on a tick box list. I think it comes with looking at other women and seeing she's got a guy filling that certain criteria and so making her feel she should be entitled to at least the same or more, however attractive or not she may be. It's unfortunate I think as their passing over men they would probably be happier with if they got to know the guy and didn't try to reduce relationships down to this often materialistic criteria, i.e does he have money, good job, good looks, good career contacts for her to get a leg up in her chosen career path (seen more and more these days), good social skills, etc. Women are often very ruthless these days and will exploit and ditch men after they've used them. They just seem to have the upper hand for some reason.