Re: I still think
I would agree with some of that - the martian one that is just a fancy notification light (albeit with vibration too) seems a bit pointless.
On the other hand I use my pebble all the time and find it very handy. Most email I find is junk or circulars so the ability to glance at my wrist and dismiss unwanted messages is great. On top of that it works as a sleep monitor (wakes you up at the right point in your sleep cycle), bike speedometer and running monitor (how fast/far you have gone).
I'll be the first to admit I could live without my pebble but you could say that about a lot of tech and for me it fills a niche.