For me, and I hate all sorts of smart objects with a passion, a smartphone's killer apps (that is, what makes me own the hateful thing) are: * GPS navigation (

For me, and I hate all sorts of smart objects with a passion, a smartphone's killer apps (that is, what makes me own the hateful thing) are: * GPS navigation (when I drive - or walk somewhere abroad) * Camera * WhatsApp (glorified SMSes, yeah, with the drawback of those damned groups - but, well, it works much better for messaging) * Email (occasionally, not happy occasions since it sucks for email) * Web (same reservations as email) * The hateful parking app that still beats pushing coins into parking ticket machines That's a lot of stuff for someone not really liking these things. Since a smart watch is too small to do all these things and a tablet does nothing I really need on top of these things, and none of these things sufficiently better to justify its larger size, I hope there won't be a compelling reason to own either. A phone however has just the right form factor because I can now not have all those other things (a camera, a GPS navigator, a tablet/laptop, small change for bloody parking machines, etc.) without having to carry a bag with some device (and I used to walk around with a small bag but things get stolen from such bags unfortunately; so now I walk around with a wallet in one pocket and a smartphone in another like an idiot.)