Haven't really read up on either terms, but based on my life thus far, I pretty much fall in the category of trying to find things I enjoy/make me happy outside of a relationship or dating. If I am being honest, I'm in my late 30s, and although I've gone on a number of dates, most really went nowhere/didn't last, and it took many many failed attempts (and women saying they don't find you attractive physically) to even get that far with any of them.
Not really anything I can change or work on either, given I'm in decent shape, but I'm not that tall, nor do I have what can be considered classical good looks that everyone wants these days (eg. chiseled jaw/strong jawline, deep-set eyes, strong cheeks, etc). As for the things I can control, I've worked on a number in past, have a good job, own my own home, car, motorcycle, money in investments for future, set of hobbies, people always tell me I'm funny/have a great sense of humor, etc, but those don't really matter when you can't even get a foot in the door, so to speak, 9 times out of 10.
I'm also someone who takes time to really grow attracted to someone (personality can matter a lot more than looks, so long as there is some physical attraction), but it also seems if you even spend a little time getting to know someone, they'll typically only ever see you as just a friend, unless they wanted to jump you from the start.
That said, I still do hope to find someone at some point, but it isn't the focus of my life, nor is it in my current long term plans (as I can't bank on finding someone). Fingers still crossed I'll come across someone one day that I do really connect with, who will give me the chance to do so.