Why is it more acceptable to be a childless, single older man than a woman?

He can be seen as a cool bachelor and nothing much is said to him. Yet, an older childless woman is discriminated and even people make ''have fun with your cats'' (even if she doesn't want nor likes pets) derrogative jokes to her.

Why?

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+1 y
She's immediately called a crazy cat lady, immediately discriminated.
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+1 y
Even the word bachelor for a guy is a cute word in comparing to spinster or crazy cat lady for a woman; thats derrogative.
Why is it more acceptable to be a childless, single older man than a woman?
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