4 years with a moderately hard core enduro EMTB. ~1000 miles per year. 90:10 commuting:recreation.
Pros.
Less miles on my 4Runner.
$400/yr less in parking permits and still avoid losing 30 minutes a day of my life to commuting on foot.
One fun hunt where I was not that guy on a SXS, but did end up carrying/dragging a 55 lb EMTB clogged with mud several hundred yards down a "dirt road"...
Sweet "recon/escape pod" on the back of my Runner when doing field work/scouting/hunting.
Several wonderful sessions in a bike park with my nephew.
My watch bolsters my self esteem by telling me I'm getting 40-60 minutes per week of elevated heart/breathing doing something I'd have to be doing anyway, but because of the friggin sweet
tool that some genius part of humanity cooked up for me, I can have more fun while accomplishing my goals better/cheaper/faster.
Getting some wrench time taking care of my rig and modding it to suit my goals.
Cons.
People think you're a commy-lib-wimp-slacker due to a strange narrative...
Anyway. I feel bad for those who are missing out, but to each their own.