Why do men who have no interest in them want women to get pregnant?

I've had a couple of strangers ask me about marriage and kids. They try to convince me to find someone so I can get pregnant. I awkwardly have to keep telling them no as I try to exit the conversation. It's not just old men, it's young guys too, some even younger than me.
It doesn't stop at strangers, but family and co workers. 2 Ex.
1. An older gentleman that I rarely saw asked me if I got married yet I said no, I'm hanging out with my girl friend and working on myself. He thought I turned into a lesbian. The way his face changed, oh my goodness. I corrected him, and then he told me I needed to take a leave of absence from work and get pregnant. Why?
2. Then I had an assistant manager who just came back from maternity leave. He came through the office showing pictures of his newborn. He came to me and asked my age and if I had any kids. I said no, I don't want any, and then he told me I needed to have a child to experience the feeling you get when you give birth and in holding your newborn. He said it's an amazing feeling that will change your life.
He's having his experience as a man, wth I'm not doing that.
Why do men who have no interest in them want women to get pregnant?
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