Do you like it? Which do you have? Do you feel like you're being followed and spied on all the time? How much about your life does it really know? Can you see your family members fitness and activity levels, can they see yours? Is it weird feeling you're being watched?
Do you find it helpful and or motivating for sports (biking, Pilates, swimming, walking) and keeping track of what you've done? I've got a Suunto but it's so big and awkward that I only ever wear it if I'm doing sport, never all day. DH has offered me one (he has the ultra, but I think it might be too big for me) and I really can't decide if it's too smart for me!