Single about 25 years. I'm 71 and I absolutely love my life. I have lots of friends and a very active life, but I love coming home and being alone there. Before menopause I had a strong libido and terrible taste in men, so I had a lot of truly awful relationships, with endless drama.
It's kind of by choice I guess, though I don't get offers. A few years ago a guy gave me the eye and I contemplated it, until I caught sight of his bare feet. Oh dear god no. Self-care is important mate, you need to see a podiatrist.
The main con of being single for me is not enough hugs and cuddles. The pros are too many to give up for that though. I get to decide everything and make plans based on what I want. I can fart loudly, talk to my potplants and be lazy without Someone rolling their eyes, it's bliss.