stupid, eh? im glad you are so opinionated. however, defining tragedy is somewhat subjective and dependant on one's interpretation. but let's get official.
the official definition of tragedy is: a lamentable, dreadful, or fatal event or affair; calamity; disaster: the tragedy of war.
or: A disastrous event, especially one involving distressing loss or injury to life: an expedition that ended in tragedy, with all hands lost at sea. (do you think seaman consider the possibility of death on a boat in the middle of a sea?)
and stupid defined: 1. lacking ordinary quickness and keenness of mind; dull.
2. characterized by or proceeding from mental dullness; foolish; senseless: a stupid question.
3. tediously dull, esp. due to lack of meaning or sense; inane; pointless: a stupid party.
4. annoying or irritating; troublesome: Turn off that stupid radio.
5. in a state of stupor; stupefied: stupid from fatigue.
6. Slang. excellent; terrific.
thus, a lamentable loss of life is considered tragic, no matter what the circumstances preceeding and contributing to the disastrous event. and my comparison is not stupid, according to the definition.
so before you start using words you don't understand, i would pick up a dictionary and learn the meanings, before criticizing others for using the right interpretation.