Why do I crush on older men?

I am currently 19 years old. I crush on guys my age as well but I just feel like older men are sexy and more attractive while guys my age are simply attractive, i dont know. I'm talking about men in their 25-35 years of age frame.

I've never dated a much older man though and I never would I just crush on them. I catch myself at times trying to flirt with them which is another thing. I never make physical contact though.
Why do I crush on older men?
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