Why do only old men seem approachable?

Im 29 yr old woman. Every time I go out, its usually old men 40+ who make eye contact with me and look friendly. The young guys ignore me, avoid eye contact at all costs, as if they're too good for me. I am not looking for a boyfriend who is 40+ which is the issue. Young guys aren't receptive to me at all. I don't know what to do?

Why do only old men seem approachable?
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