I had to Google it to find out what it even does. Nope, I would never buy one. Not once in my life did I wish my watch would recieve texts or monitor my daily activity, so I can't see how this would improve my life at all.
I read somewhere that when most new products that come out, the marketers job is to convince people that they NEED this new product, even when they clearly don't (as evidenced by going their entire lives just fine without it). In other words, necessity is NOT the mother of invention. It's more like: invent something first, then "create" the necessity. I'm not falling for it.