Yes, I've lived on my own since I was 30 - I'm 55 now, so 25 years.It's bliss.
I'm a raging introvert though and very happy not seeing people for weeks on end. The work from home/ Covid restrictions made little difference to me, apart from the lack of travel opportunities as I used to travel abroad at least twice a year and have several UK breaks.
I bubbled with my sister which was perfect.
Nobody in our family or friends group has children (and none of us are extroverts) so there arent the usual weddings, christenings, parties etc.. which other people tend to do frequently.
Ive had a number of live-in relationships back in my twenties and they were enough to put me off living with someone for life. Couldnt stand all the pub visits, people popping in all the time, overnight guests, Christmas chaos, parties, dinners, lunches etc.. Exhausting for me. Plus the emotional and mental load, plus wife-work and life admin. was draining. Lack of privacy is a real mental-health killer for me. I find cats much easier to live with!
I am a high earner though so this makes a huge difference. If I didnt have a good income, I couldnt afford the luxury of a nice house, big garden, lots of day trips, holidays and weekends away. I know I'm very lucky.
I must admit, it was frightening being alone at first but Freedom and quiet are so rare and valuable, I intend making the most of them while I can.