I'm single and somewhat dating in my 40's but its tough. I look at myself and my single friends and either we can't find anyone decent or those that have are accepting literal scraps in terms of the quality of partner just to have someone.
There is an abundance of men with nothing to show for 40+ years of life no qualifications, no savings, no home, no friends. Men with serious issues with addictions such as porn, drink, drugs, gambling and so on, men who are abusive or cheat, men with other debilitating personal situations and habits which make them a liability rather than a viable partner. Essentially men without these liabilities just have more choice and can and do go younger.
Men who are just not emotionally available either because they are avoidant or just after sex or they are still hung up on an ex partner or wife. This is actually a bigger one than I realised as there is actually research showing that men typically do not ever really get over an ex or at least at a far lower rate than women who are more likely to take time out from dating to truly grieve and move on so that their feelings towards an ex become neutral. I think something like 40% of single middle aged men never move on and remain deeply emotionally attached to an ex in perpetuity, another 40% compartmentalise and are able to have another relationship but still on some level pine for their ex and only the other 10 to 20% are able to fully heal and move on in the way most women do. I think this tendency to hold on to an ex emotionally is quite damaging to new relationships, many of us can relate to that feeling of being a placeholder or being swept off our feet only for the man to turn cold when the thrill subsides and he still misses his ex. I am not any man's booby prize.
So not only do you have to sift through those men with nothing to show for themselves, and probably looking to leech off you, move into your home and benefit from your hard work but you have to weed out men with serious issues of all kinds and men who are still in love with someone else and unwilling to do the work it takes to heal but still want a woman to be a placeholder and caretaker. The chances of finding a man like that who you find attractive and have something in common with seems to remote to me.
I know women in my circle with their shit together in every respect who have accepted men with nothing and no one, no savings, living in shared houses with no qualifications or real prospects, none are even attractive. A friend of mine recently moved such a man into her home and now he has his feet under the table he is starting to display abusive and controlling behaviour all while bringing nothing to the table except a bunch of unrealistic ideas for women to support him in. I have to ask myself is being able to post couple photos on social media worth it.
I do think there are good men out there but at this age most of them are married and those who do wind up single are not single for long and rare as hen's teeth.
The pickings are just so slim and problematic for the most part that most women are probably better off single unless you are very lucky and meet that one in a million guy who is mature and at least somewhat healed.