Why do old people always act like parents to the young?

I moved out of my abusive parents house to live with an older guy in his 50s. I am 28. And he does the same things my parents do such as vaccum the house, remind me of the weather before i go out, hangs my belt if he sees it on the floor, hangs my clothes if it is on the floor, tells me to stay safe when im out at night, spends a lot of time in kitchen. Are all old people this way? He acts exactly like a parent but he has no kids

Why do old people always act like parents to the young?
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