They might be single, but women are not men. Women do the "choosing", men do the "hunting". All they have to do is lower their ridiculously high standards, and they won't be single any longer.
I've heard men say that even when they're desperate ("thirsty" -- yes, we're talking about worldly men without the Faith or Catholic morality), they get shot down by women who by all calculations should be welcoming their advances. We're talking about women who are not a prize, not a catch, in anyone's book. But despite advanced dating age (over 30, over 35, over 40), being less than a THREE on the 1-10 scale of beauty, being 150 or more pounds overweight, etc. they STILL want to date that top 1 percent of men. It's ridiculous.
The modern world has told them "beautiful at any size" and "you go girl" -- and these women are pairing their existing, natural feminine vanity with male pride and enjoying every minute of it.