I'm 33 and my closest friends are 20 — is that weird or unhealthy?

So im 33, and i still feel like im 20. Im pretty fit etc and my friends are actually 20. Someone said to me it was weird to have friends a decade younger then you. I like my friends. They are good people, and im a good person. We just have a drink sometimes and hangout othertimes. I think people my age are all depressed and sad all the time, like they have given up on the things that make life fun so I naturally float towards the younger (absolutely nothing sexual) but after hearing that it was weird. Im starting to think about it and maybe I am I am weird for having younger friends? I dont want anything bad for anyone else or myself if I can help it.
I'm 33 and my closest friends are 20 — is that weird or unhealthy?
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