> Maybe I'm a curmudgeon, but I have subzero interest in smartwatchesI hadn't bothered with watches at all until I got into running, as there are clocks everywhere including on my phone in my pocket.
Though I only use that for specific things (telling the time, pace tracking, and breadcrumb mapping when following a trail route or otherwise in an unfamiliar location).
> All these devices will be e-waste in 30 years (most in less than 10).
Even 10 is a very generous estimate IMO. Even though I'm a light user I've gone through a few in the last six or seven years. First was a gps-only-when-paired-with-a-phone-step-counter-otherwise fitbit thing (given to a cousin when I got my next device), I had a Band2 but not long before MS gave up on that (it went on eBay, I doubt anyone is still using it), one TomTom died, the replacement is now a spare (may soon be donated to a friend who is getting into running), the Garmin I currently use is likely to be replaced this year (I'm sliding down the off-road ultra-running rabbit hole and don't have a great sense of direction, so extra battery life on those "not getting lost" features will be handy! (while pretty good at reorienting myself with a map, the watching beeping before I go far enough off course to need to is very useful)) and demoted to being my spare.
And I'm using it as a utility device - people buying them mostly as toys or fashion/showyness probably upgrade even more often (or just bore of, and stop using, them sooner). Even accounting for selling/donating the old device after an upgrade, I'd say most will be abandoned in significantly less than a decade. Much like phones.