Yep!
Me!
After my divorce I took some time out to recover and sort myself out. Met a guy who seemed ok through a hobby and we were together for a while but unfortunately he wanted his own dc and I can't have any more so really needed to go our separate ways.
Was very busy over the few years after that and then came to terms with being bi and met someone but that fizzled out as we annoyed each other in certain ways.
I then found myself where my personal circumstances weren't really conducive to dating (dd had a rough year culminating in dx of disability, my own health deteriorated, my ex stopped contact with dd etc just a generally shit year!) so decided to just not bother for a bit...
And then found I was much happier without all the drama and compromise! Cancelled all my OLD stuff which had never been particularly useful anyway, and just accepted things as they were.
As time went on I realised I actually quite enjoyed being single and that I'd probably just fallen for societal pressure.
I've had the occasional bit of fun with friends of mine who I have no interest in dating and they're not interested in dating me when I have felt the urge so to speak but generally speaking In terms of relationships I'm far happier on my own. I can see in the future I MAY Possibly date again but I don't think I'll live with anyone else - that tends to be the point they irritate the hell out of me! I sometimes joke I need to meet someone who also has the money to buy us 2 flats or houses next door to each other! But in reality I think even that'd be too close for comfort!
Several friends and relatives similar.
A few are widowed and their deceased spouse/partner was their person and they're not interested in considering anyone else. Some are divorced/separated, a couple have never had a serious relationship and aren't looking for one.
They're all leading full happy lives, successful in their careers, have good friends and in some cases dc and even dgc to spend time with
Coupledom ain't necessarily all it's cracked up to be (and especially for women it can generally be detrimental to their happiness and health according to some studies)
Plus everyone's different. I don't believe everyone's suited to being in a relationship or at least a cohabiting one (that is the part I really struggle with - I need my space!) so people should be able to do what suits them
Also we need different things at different life stages too.
Dd has gone through that late teen "playing house" phase with her last boyfriend which broke up when he got a bit too comfortable with all she was doing for him! She's now studying and is focusing on that as she recognises she tends to become "all consumed" when she has a boyfriend and so is planning to not bother for the time being - it's only her first year of this and academic year at that so we'll see whether it actually lasts 
Now if only I could get my mother to accept that "a nice young man" isn't the be all and end all I'd be sorted! (And yes she knows I'm bi but thinks I'm not really I just haven't met the right man!🙄 don't even get me started!)