I've never had the need for an alarm i nearly always wake up in time. Although saturday was a bit of an exception, i woke up at 8:15 and i usually get up for work or college at 8. It wasn't exactly a disaster but i think everyone tends to panic when they wake up, look at the time and see they're running a bit late. I have an alarm clock in my room but the alarm is so quiet i'd sleep through it, i might hook it up to an amp for fun