Hey Benchman, I'm the same age as you, have a wife very supportive of my hobby (she probably feels that this is the lesser of all evils), and as an engineer, find that modeling is the perfect creative outlet. I started as a young kid, probably 7 or 8, and never lost my love of it, although I went through periods where I just could not find the time. Now that my kids are in their late teens, I do have the time, and recently got back into it more seriously.
My observation is this...just go to a any craft store and see the legions of people, mostly women, who are engaged in some sort of creative outlet. OK, so they like the floral stuff and the knick-knacks, but a creative outlet nonetheless. At work, I leave my issues of FSM out in plain sight, and a lot of people like to look at them and just say "wow" at some of the photos. Modeling also keeps us a little connected to our youth.
I have a patent for a container handling system and was thankful that I could build a couple of static models to explain the system, which is too complicated to explain on paper. I got to display them at trade shows, and enjoyed seeing folks' reaction to what they saw.
If a picture is worth a thousand words, then a model is worth a thousand pictures!
Have fun!