> most people should aim to do what we've been biologically evolved to do, namely find companionship and love w/ someone and raise a family.

You misunderstood the point. The GP isn’t saying you shouldn’t do that. They’re saying that if you find yourself in the position where you don’t have mutual love for one another, the relationship could be worse for the both of you than if you were both alone.

> I don't know what "being with the wrong person" means. There is no "right" or "wrong" person as the world doesn't revolve around you.

It’s subjective. As is love itself.

The person quotes his or her qualifications as being single for 20 years, as though that's a qualification. It was 100% about long term coping mechanisms for persistent loneliness and drifting in life. Why would you want to model that?