Yes, this rings true for me.
I spent quite a while wondering what I was doing wrong, ending up in and out of fleeting relationships - fleeting because even though when alone I felt I was somehow lacking, I still wasn't willing to put up with as much bullshit as many - and even then I look back and think I put up with too much, I know I definitely did in one relationship that was abusive - but I put up with it because I was already convinced that I was somehow a defective human, which of course plays right into an abusers hands when it comes to blaming the victim for 'making' them do it.
Never ever stopped to ask if I was happy being single, I genuinely think it was 75% feeling like I was an unattractive failure of a woman because no one wanted me, rather than actually being unhappy in myself at being single.
I've realised that actually, I'm happy single and I don't want to change that. I'm not saying never, I'm open to the possibility of someone coming along and changing my mind - but it's not the be all and end all. I still get the "Aww, there's someone out there for you" head tilt sympathy from some - there might be, but I'm not going to lose sleep over it.
I like my life the way it is, someone's either going to have to slot right in, or for any compromise I make on that not be a sacrifice or feel like I'm losing something I think.