I agree OP. I'm late 50s now and have lived with three partners. I MUCH prefer living on my own and never get lonely. I've lived alone for 25 years now.
The problem is the compromises you have to make. When to get up, what to eat, what radio station / music you listen to, what TV shows/films you watch. Decor and garden choices. Visitors to the house (who and how often, appointments or 'poppers-in' - shudder). When you go to bed, the heat in the house, smoking or non-smoking, friends, other people's families. Where you go, what you do, holidays.
The list is endless and if you're not careful, you can end up living someone else's life - taking the step kids to soft play, going to centre parks, watching the rugby or football, spending all your time in the pub or walking someone else's dog.
i appreciate that the idea is to share your life with someone but it always seems to be women who compromise.