I wish I didn’t feel like I had to say this, but I don’t believe that there’s any one right or better way to do relationships. Monogamy, polyamory, swinging, hierarchies, living together, living apart, etc. I think there are some characteristics of a healthy relationship that are valid for pretty much any relationship type, romantic or platonic, but beyond that, I really believe that there’s an extensive spectrum of relationship variety with a plethora of viable options.
When I talk about certain things making more sense than others, I’m talking from my current perspective, based on the relationships I’m in, and the people I’m in relationships with. My opinion could change in a few years, and it would be different today if I was dating different people.