Sleeping Is Much Too Pleasant...
... to be interrupted by an alarm. I wake up when my brain decides to do so. I'd hate to be torn from deep sleep by an untimely noise.
I rarely have morning appointments before 10 am. The advantages of a free occupation.
By the way, there's a new gentle alarm now, that wakes you up by a gradual increase of light, not by noise. That way your brain can pick its own time to be awakened by the light. If I would ever need an alarm again, that's the one I'd go for.