What other Hobbies or Interests Do You Have?

I was curious as to what other Hobbies or Interests do you have that also take up much of your time, energy and money or is Audio the only one for you?
Being a car enthusiast is definitely my first passion. Always reading about new cars and lusting after some classics.

For me, besides my interest in building a Audio System in the past few years, I am also a Car Enthusiast and Amateur Photographer (actually I hate using that term, more like a photo enthusiast because I consider myself a novice).
All 3 Hobbies have taken much of my time, energy and money. Sometimes I look back and think, wow, what have I done?
Could have saved all that money and time.
So I guess I should list my gear if I am talking about other hobbies:

2016 Mustang GT 6 Speed (weekend car, a few modifications) and 2018 Subaru Forester XT (Daily Driver). Obviously both are performance oriented.

Camera Gear: Nikon D750 with Kit Lense, Nikon 50mm 1.8 Lense, Tamron 14-24MM 2.8G

Apparently many of us make fun of conspiracy theories even in the face of a possible pandemic. :-D (referencing a post on Munich show cancellation).

Seriously, I teach SCUBA as a break from hifiness. And try to make violins.
Born and raised in NYC I yearned for the mountains so I took up
skiing, camping, hiking and hunting early on.  Competitive long range shooting has been fun the last 5 or so years. (I can shoot the volume knob off my Auralic Vega at half a mile)!  Been on several awesome horseback hunting adventures out west.  (that gets addicting and expensive). Woodworking and furniture making, and oh yeah the guitar I bought......haven't got around to it yet.
Fine art black & white photography.  I work with 4x5 and 5x7 folding wooden view cameras, expose and process film using the zone system, create unsharp masks prior to printing and print and process in a wet darkroom.  I won't bore you with equipment models.  Technique is far more important than the hardware although everything I use is excellent quality and more importantly, in proper working condition.  Subject matter ranges from architectural studies to traditional landscapes.  Greek Isles, Death Valley, Canadian Rockies, Finger Lakes, Maine coast and more.  I am also the recording engineer for two local orchestras.  Again, I won't fixate on hardware as it's all good stuff and technique is far more important.  All of that plus listening to music pretty much occupies all of my time except for maintenance of my residence and an occasional bike ride (I love hand made Italian road bikes).     
Motorcycling (on/off road), travel, guns, CAD & 3D printing, Porsche
Ham radio operator
Photography including infrared