We agree, though the thing about not being with past lovers was kinda bullshit. It's the future polyamory could always be a thing, which would stop their concerns we feel.
The thing with past relationships is that they give the worms to people so that the worms can learn new experiences and pass them on to the next generation. If the worms are basically just living the same generation over and over again it defeats the purpose (in their eyes). I think the whole banishment thing was a bit harsh of a punishment, though.
Yes, but this assumes that:
The 'worms' don't change and nor do the people who inherent them, normally, over a lifetime.
Polyamory isn't an option, which it could and should be.
People won't have very different relationships, even within monogamy (kind of related to 1).
well, also, the Klingons killed their gods