I have a phone alarm that I don't like hearing. It's actually not as bad when I'm not expecting it. But when I know it's going off in a couple minutes, like just now, I dread the whole experience of anticipating it.
The fact is, though, that it's easier to just let it go off than it is to turn it off before. It's very helpful for those times that I would forget an appointment. But annoying for those times I remember. Which is most of the time.