I've had mine roughly 18 months now, and I did have a blip where I barely looked at it, but that was more due to my phone being stupid and not syncing it.
You can set it to buzz at you for however many hours or days you choose, mine is set for 11 hours 7pm-6pm 6 days a week, I have Sundays as free days. So at teo to each hour it will buzz if you haven't done 250 steps.
There's challenges you can do, either by yourself or with others, some are ones to hit your goal or some are distance ones, all step based, but you can walk around Yosemite National Park virtually.
For me at least it's been worth it.
You can track food and water on it too, but I haven't used that side of it. The more expensive ones play music and take calls and whatever else, but I've got one of the cheaper ones and that works fine for me.