It's simple 'economics', of a certain kind: single women (past a certain age) are relatively rare to find compared with single men, hence the few that there are will have more choices in partners than their male counterparts, who are more numerous. You'd have to wait until they're too old to be conventionally attractive anymore for that to start evening out, and by then the women who are single are likely to have plenty of good reason to stay that way, as having ~4+ decades of being played around with by men (and losing out on their prime years for marriage/attracting more quality partners, in the process) who wanted to live the playboy lifestyle is unlikely to make them all that receptive to getting into a long term relationship with one by a certain point in life, and women cope with singleness much better than men usually do. I think this is what leads to the stereotype employed by men that all women who are single past a certain age are bitter and crazy 'cat ladies' or whatever...but anyway, that's how it seems to shake out. We men are largely replaceable in this scheme, but I don't think that's really most women's 'fault' (as I don't know any who don't want to find their Mr. Right or whatever by at least by a certain age -- same as men with regard to the 'right' woman). To hear the women I've known talk about it, it's a rather understandable outgrowth of being the obsessive focus of male attention since the age of 13 or perhaps even earlier...after a few years/decades of that, I have to imagine it becomes second nature (as well as a matter of necessity) to be very, very selective. Realistically, you can't give everyone a chance during those years when it seems like 'everyone' really does include everyone!
Hence men remain single (and tend to grow increasingly bitter ourselves as we age...*cough*), while fewer and fewer available women cross our paths. Not sure what to do about this, really. Even if I could wave some kind of magic wand and transform society into one in which things seem more equitable, it's a bit late for me personally, and at any rate I don't want to have my life revolve around what some woman I don't know would find attractive.
I'm not out here to just attract somebody/anybody because otherwise I'll be alone -- I've been alone, so I know it won't break me, just like how I've been not-alone, so I know it won't complete me. Neither of these states of being scare me (anymore...haha).
I've got a decade on the OP, so maybe this is just the sort of thing that comes with experience, but by this point in my life things generally fall into two categories: (1) things I want to do for my own sake, which may or may not line up with what anyone else cares about or would want some hypothetical partner to do (i.e., learning the specific skills and attitude that I feel I should learn to make myself a better, more well-rounded person according to my own metric, not theirs), or (2) things I should really be doing even if I don't necessarily feel great about them all the time, because I don't want to die in my 40s and/or waste my life (e.g., properly balanced diet and exercise, properly balanced spiritual and ascetical life, etc. These things don't always 'feel good', to be honest, but I know they are good for me in the long run, and I'll only be hurting myself if I neglect them while I'm still here to do something about them). (1) is just a self-centered subset of (2), and I'm hoping that as I age, if the good Lord grants me the time to do so, I'll have more and more things that I would've looked at as category (1) things as a younger man come to be fulfilled as category (2) things, as part of submitting my will to His. (Notice how a woman isn't a necessary part of this unless He decides she is.)