it's all about love and meeting needs. So a married sub unwilling to leave the marriage may only be available part-time to her Master. It's regular, but part-time. So the Master has another part-time sub. Why is this judged?

I do not believe any one person will meet all your needs, so I think the idea of forced monogamy is greedy, because someone has issues with sharing. Kind of like the divorced guys who shoot their ex's because that way no other guys will have her either.

Love is in the moment. It cannot be limited I have been in relationships where I lived in a dorm of women and never touched them because my love was elsewhere and i had no DESIRE to, but not because it was a should or a should not. I have had 2 subs at once.

Never had a slave maybe that's different.