Hey, I'm 66 and still like fireworks, so I think you are safe at 37!
As for what I did (a day late and a dollar short), I went up to see Dad and we talked about old times, including fireworks. Or, maybe I should say I talked and he listened, but didn't remember. Like the time when I was about 5 and put a firecracker in my toy Howitzer and pulled the lanyard - only to discover he was standing on it. The shrapnel hurt! But, as I said, he didn't remember it - or much else actually.
Then I came home in time to go with my wife, daughter, and 2 year old grand twins to the neighborhood party. The inflatable slide there was in use by the big kids, so ours only got to wet their feet. But then the grandson spied the neighbor's John Deere mower and was obsessed with wanting to ride. So grandpa finally went after his JD and we took rides - and he was happy. Then the fireworks started and he watched intently - until a little boy threw a lighted smoke bomb and hit a girl in the leg. At that point we left.