Is age really a big deal?

Okay so there's this guy that I'm kinda into.. He's 27 and I'm 21.. I feel like it's not a big deal but some friends and family have me nervous that it might not be the best idea because he might have "more experience ".. I literally have none btw haha am I just overthinking this? 
He looks like a tough guy but he's actually a sweetheart 😍