It all depends on the application. The ones I've seen that act as an extension of some other computing device (typically a phone) are pretty handy (har har). W

It all depends on the application. The ones I've seen that act as an extension of some other computing device (typically a phone) are pretty handy (har har). When used as an additional input device, or for notifications, etc. they are much better for basic interaction than the alternative of accessing the device itself.