Your story is surprisingly common. I started playing at about 10 with the Salvation Army, first cornet then onto flugelhorn, until I was about 16 when circumstances decided I had to stop (long story and nothing related to playing)
Spool on 30 years and my son decided he wanted to play an instrument. I used to enjoy teaching the beginners to play when I was younger so thought I would teach him to play cornet. I failed miserably (can't understand what he was doing as regardless of what valves he was operating, he got the same note!) so he joined a learners band. When they were short, I offered to fill in, before being persuaded to join the main band. Ironically, within a few weeks of my signing up to play, my son decided he'd had enough and packed it up.
I'm hoping that like many others, he will one day return. I was quite amazed that most of the adults I have spoken to that play have had a fairly long break at some point and returned.