I started in the hobby 3 years ago when I was 39. I wished I started sooner. I feel I missed out on at least 20 years of fun. But now it's only worth looking forward - better late than never. Your sons won't have to feel that way. They have a Dad that will have gotten them their start in RC. I have a young son that I am looking forward to sharing the hobby with. (As long as he takes and keeps an interest in it. 'don't want to force it on him.) It should be a great father/son hobby. (Yes, daughters too.) So go for it, and don't worry about how old you are. It's not the years, it's the mileage.