What makes us valuable?
Let’s cut the shit where I mention some potentials to pique your interest in an attempt to appear clever and get right to it: survival and reproduction.
That’s it. “Will this person help me survive and/or reproduce?”.
The importance of each is asymmetrical in guys and gals. For males, it’s more important for a female to help them with reproduction than survival, and vice versa for the females: they (primarily) look for survival in a mate.
Of course our higher-level thinking has afforded us humans some butter on the bread, but they’re the water- and flour-y fundamentals.