No one is obligated to choose you as a partner, and it does not matter what their reason is for not doing it. Relationships are deeply personal things, and everyone has the inalienable right to discriminate when it comes to their relationship choices. Crying over this, trying to browbeat people over this, trying to penis watch over this, trying to shame over this, and trying to legislate over this will not change that simple fact.
You are not entitled to a relationship from anyone. Just like no one is entitled to a relationship with you. You have to convince them to choose you, just like they have to convince you to choose them. Once people realize this, they will stop wasting their time trying to force people to date them that have made it clear they are not choosing them.