I backed the first and every subsequent Pebble KickStarter.
When they sold out to Garmin* and refunded my last order/pledge, I spent _some_ of that refund on a 1957 Russian Kirovskie Sputnik Commemorative mechanical watch.
I know none of my Pebbles or any Apple Watch is going to still be keeping good time 70 years from now... (it gains just under a minute a day - resetting it off my phone's clock when I wind it in the morning has become part of my waking up ritual...)
Edit: * It was FitBit not Garmin, as pointed out in replies by dugfin and spike021 elsewhere in this thread. Thanks.