Here are the main ones I've got.
Aviation. I used to spend all my time at the local aero club flying areoplanes and getting involved in club competitons but not so much these days as I have a two kids now.
Also gliding and glider towing. I do more towing as I don't have to pay for that one
Photography. (Yes me too.
) I like landscapes mainly and interesting types of weather. My wife is more into photography than I am. I have dabbled with processing my own photos in the dark room, but not for many years now.
Tramping/camping. There's nothing like getting out into the back of beyond for a few days.
spending time with my wife and kids. It's not a hobby of course but a way of life now.
That's about it except there is a guy at work who makes and flies radio controlled model aeroplanes so I sense another hobby coming on
Cheers
Gary