How often does being unwanted by someone make us feel like we are worthless or worth-less than others? Being unwanted by someone simply means your purposes and intentions don't align. You each hold different intentions about what you seek from one another. If those don't line up, what you seek won't be fulfilling.
Of course feeling unwanted hurts like hell. But it does not mean that any piece of you is worth less than someone else. It simply means you have different endgames in mind.