Do you need a smartwatch? Well, you didn't "need" your smartphone and you didn't "need" your smart tablet, and that didn't stop you. However, you needed a car and you didn't get the Smart Car. So there. But for $125, why not?
Disclaimer: when I was a kid I had a PacMan watch and was very popular on the playground for about a week (charging 10 cents per game), until other kids got Pacman watches. As far as I can tell, you can't play Pacman on the Pebble, yet.