Morbidity ftw...
And just cos it was what first popped into my head when I read the topic title:
http://www.deathclock.com/
Apparently:
If I'm normal I'll die on Tuesday, January 8, 2064 (Age 74)
If I'm optimistic I'll die on Monday, March 19, 2085 (Age 95)
If I'm pessimistic I'll die on Thursday, December 6, 2040 (Age 50)
If I'm sadistic I'll die on Friday, January 8, 2027 (Age 37)
What a load of ol' shit...