Here is an interesting story that I think is appropriate for this thread. My wife has a friend who's father one day went for a check up at hospital and was told that he had some form of cancer and had to begin quimo therapy immediately, and that his chances of survival were slim. This man, probably 60 years old or more by then, left the doctor's office and never returned. He lived to be more than 80 without ever seeing a doctor again.
That of course is not a resposible thing to do. But it does make you think.
As for the question, I don't know what I'd do. I'm sure I'd be miserable and wouldn't have a good time and I definitely wouldn't be able to enjoy any trips or anything. I would probably go on a vigilante killins spree. I'd target all scammers, corrupt politicians, thiefs, and rapists.... and try to take out as many as I can before I myself get killed.

Fuck, I'd rather not think about these things.
PS: I was just reminded of that movie
Joe versus the Volcano with Tom Hanks. It deals with this same subject and is actually very funny.