I'll bet that a survey of lottery players would reveal that more than 50% know they lose money on average by playing the lottery. If not, a survey of people at slot machines would be even more likely to produce this result.
Gambling is about thrill.
If you still get thrill out of slot machines, it just means that you don't get it at a deeper level.
Almost everyone understands that they will get old and die (and that dying is bad), but relatively few see aging as the most important disease to fight.
(Since there didn't seem to be one for this month, and I just ran across a nice quote.)
A monthly thread for posting any interesting rationality-related quotes you've seen recently on the Internet, or had stored in your quotesfile for ages.