If you don't have time to do basic maintenance on your devices then you quite frankly don't deserve any nice gadgets.

Do you run your car for years without changing the oil? Using an electronic device such as a smartphone, smartwatch or PC without ever doing maintenance on it is the equivalent.

The most common issues with smartphones and smartwatches can be corrected with spending 30 minutes twice a year to perform a factory reset and set them up again.

Your smartphone and smartwatch starts performing like shit after a few updates for the same reason your computer at work starts performing like shit after you've been using it for a few years.