> "But you only get high value when you are."

Bingo! I'm glad you got it.

I see so many women (and not a few men) believing they can get - or even deserve - the best partner, yet what they can offer is so much less...

It's actually just logical: you can get (receive) similarly to what you can offer. It just makes sense. It's amazing so many people do not realize it. :-o