I'm already 25 and still have no urges to reproduce... weird?

Several of my family members and others say ''give it 3-4 years and you'll be singing a different tune'' change suddenly''.

Is that true? I still have no urges for crying brats. I enjoy my job position as the new supervisor, playing some video games and chess, doing to a couple parties, friends, family reunions and still studying for my Master's.

Is it weird that I still have no desires nor urges towards kids at the age of 25?
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I've been invited to 3 baby showers and felt indifferent towards them. I still felt no urges whatsoever for kids.
I'm already 25 and still have no urges to reproduce... weird?
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