August 2015. I still haven't seen anyone wearing an Apple Watch in the real world, at least not here in Germany. I've only seen a fistful of smartwatches thus far, and nobody who wore one actually gave that device category a lot of credit or said that they couldn't imagine life without them. After all, these things are basically just smartphone extensions and do not provide anything that the smartphone couldn't do on its own.
I still have not seen anybody who could actually REPLACE a notebook with an iPad or any other tablet, and I still have not seen anybody who ever used his tablet/iPad for something other than playing casual games, reading an eBook or consuming music or movies or doing some "light" web surfing. Now the market for tablets is saturated and people have figured out that the new 2015 tablet is not any more useful than their old 2010 tablet. In other words, tablets are a fad that, as the drop in sales numbers indicates, is finally coming to an end.
Just as those Apple Watch health apps are a fad that won't last. People who need a gadget to make them pay attention to their own health will soon start getting annoyed by those nagging reminders and either ignore them or switch them off -- gadgets don't change the human nature, full stop. Tamagochis also were hip for a while, and those have disappeared a long time ago. Fads don't last.
I haven't seen an iPod in a long, long time, though - because smartphones have effectively killed their market niche and smartphones have become cheap commodity products. The iPod itself wasn't the big deal anyhow. The iTunes store behind it was what changed the game, because all of a sudden there was a relatively easy to use way to fill an mp3 player with legally obtained content without having to purchase a CD and rip it yourself (which, at the time, was also very time consuming). The store is still there. But now it's fueling smartphones instead of pure mp3 players.
The graphical user interface and smartphones were real game changers. They were actually useful and had a significant impact on our daily businesses and routines, and they opened the world of computing to non-technical people and made the Internet mobile. And smartphones, at least once in a while, can still be used to make a phone call. For a lot of people, that's a useful feature...
Truly useful things last - and don't need to be hyped to sell well.