Close platonic friendships that outlast romances are more healthy than requiring each new girlfriend to be your primary means of emotional support. The lack of social interactions outside of work and wife is also a cause of codependent burnout: it’s unreasonable to expect that the same person is good in bed, a loving mother to your children, primary full-time emotional support, and a chef.
what I recall from my time in my 20ies my desire to be sexually active was a lot more dominant and in charge of my higher faculties than what it is today nearing 50.
biology determines how strongly we feel we need to be with a partner I think. I accepted much more toxicity and negativity just to not be alone (allowing control by my partner over my emotions and was far more ready to compromise) than what I'm today.
Today any potential relationship needs to be solid on a mental level first before I'd even consider going further. That certainly wasn't the case in my early 20ies. Also I'm today able to spend time by myself (and not just get by but really enjoy my own company, thoughts etc ...)
The concept of a dead bedroom absolutely terrifies me. Like, why bother with a relationship if the one person you can have sex with doesn't ever want to have sex?
And on your other point, polyamory is increasingly common and a very valid way for people to approach such an inclination
Wow, that's two turns of phrase that erode your point in one sentence.