What other hobby or hobbies do you have?

Really interesting. 
Audio gear has taken over the #1 spot from golf and sports cars, Vintage Porsche 911's to be precise. I just got tired of working on them. I still play golf twice a week but not as pationate about it since audio took over. 

Also spend alot of time with my 3 year old grand daughter. That is truly the most important and fun thing I do. 

I am allways looking to try new things though. 

Not much time for anything else. 

I collect and restore and play pinball machines.  Have been into owning them for over 20 years now.  Would have been in the hobby longer but didn’t know you could actually own them.  Mostly mechanical games from the 60’s and 70’s but also a handful from the 90’s. They really fill the gearhead bent easier than cars if you are so inclined. You usually end up with something more valuable if you fix it up.  And you can work on them in the comfort of your home.  

Another gardener here. My garden is really quite lovely. A garden is never finished. It's a work n progress, always evolving. In gardening I have found my creativity.