The alarm is one of the reasons as Broken_Hippo mentions. However my concern has more to do with the current state of things rather than the solution for this

The alarm is one of the reasons as Broken_Hippo mentions. However my concern has more to do with the current state of things rather than the solution for this particular problem. I mean, how is it that I have to go and turn off the phone? shouldn't the phone –apps/devices/etc– try to be less disturbing?