You've very much summed up my current feelings on men and dating.
I think there are decent men out there, but by and large they are in LTRs, because they are the decent ones who don't lie, cheat, deceive, abuse and so on - they don't do any of that relationship ending stuff.
Sure there are some exceptions, but a lot of men remain, or become single for good reason.
Men bore me too. My dad always said that the sort of men who gravitate to me are my intellectual inferior, but I'd never be happy until I met an equal. And he was right, I'm still looking. My most recent Ex was cleverer than me in some ways, but very much not in others and had a massive chip on his shoulder about all the advantages he perceived I'd had (even though I grew up in a shitty part of East London in a council house with no money, and he had a middle class upbringing in one of the most beautiful towns in the UK!). So like in every single relationship I've ever had I put myself down, bigged him up at my expense. And the self centred shitbag cheated on me anyway. And made that all my fault too.
I'm currently working with a good friend of mine who's from another organisation. We were in a meeting recently, and I realised how she cheerleads for me constantly in subtle ways, pointing out my achievements or interests to others - something my parents used to do as well when I was growing up. And it almost made me cry because of the realisation that I've always wanted a partner to cheerlead for me and they never have. I've never felt they were proud of me, wanted to share my accomplishments or big me up in front of others. Even though I did that for each and every one of them. Like you, I don't think any of my many Exs were worthy of me or my time.