Well yeah, rejection is in our culture. Whether you are racist, gay, religious, you will be rejected a lot along with doing rejecting, even women. As a man, I reject a woman as soon as I decide not to approach her, or decide she's not worth the trouble.
Statistically speaking, the more you care about who your mate is, the less likely you are to find one, this goes for men and women.
Take me for example, and why I have a limited dating pool.
There are 6+ billion people in the world. Roughly half of them are female. But I'm looking locally.
Of these 3 billion females, 150 million of them are living in the United States at this given time.
Of these 150 million women, 33% are under 15 or over 65, so my pool is now 100 million, but since I won't date younger than 18 or older than 28, 5/6 of that 100 million are the wrong age. So my pool is now more like 17-20 million, and how many of them do you think are married or dating someone?
So in the United States, taking into account only age I have only roughly 17-20 million potential mates. Now imagine I only want to date Jewish (some girls might), or Muslim. Imagine I'm gay. There are a million reasons to reject someone as a potential mate, and the girl sitting alone in the park who tells you to 'piss off' only needs one reason.
For arguments sake, say I wanted a Catholic woman, aged 18-28 who is living in New York. My total pool is:
9.5 million women total
1,425,000 (15%) are 18-28
541,500 (38%) are Catholic.
God help me if I was racist too.
So out of 500,000 women (many who are probably married or dating), I'd have to find one with acceptable looks, personality, and an infinite amount of other deal breakers.
At least more than half of marriages end in divorce and most relationships break up, so I'm a little less worried.
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"In the end, Darwin always wins" - Me