But I also think if you find the right person, you don't have to do any of the above
It's not about the "right" person. People who say this are missing the point.
No one is perfect. There will always be compromises that need to be made, however small. There will always be times when one partner annoys another, however rare. It's life and we're all only human.
My aunt and uncle in their 70s have what I consider to be a great relationship. They met at Uni, have tons in common, always on the same page re major life stuff. Share everything, finances, chores, child rearing, grandparent duties etc. They have holidays together and apart, shared hobbies and their own hobbies. They've always had a great life. They still really piss each other sometimes! They still consult each other on any major decision. Sure they might agree, but they still need to do it. My uncle sadly had a major illness not long ago and my aunt is now his carer. She of course does it, because they have a 50+ year relationship behind them, but it's still hard.
The true joy of being single is not having to deal with even 1% of the negatives. Sure we miss out on the positives, but that's IF we could even find that person that would make it worth it. There comes a point for some people (me being one of them) where virtually no amount of positives are going to make up for the negative. I'm just not interested.
I have grown up DC, enough money that I'm not struggling in any way, a nice home, I'm not lonely, I'm not bored, don't even really miss sex any more. So I'm not sure why I would bother. I'm also mid 50s so realistically, you're talking men of around 60. No thank you!