Picking and choosing whom to share life's experiences with, over a lifetime, sounds altruistic. Ever been through or supported someone through a health scare or newfound diagnosis? At that point, do you grow bored and run off or stand by? If there's then two partners going through something major, at the same time, how to decide?
If it's about fear of boredom in the bedroom, it takes two to tango.
I guess to lead a bachelor/bachelorette life sounds intriguing on the surface. Guess, being alone in a nursing home, sounds tempting.
It's not easy finding compatibility in traveling. A bit of emotional intimacy is rather important, but youth is fleeting.
Why aim for monogamous relationships? Because it makes sense, to many.