The other day I met myself

The other day I met my future self. He said he was from 2020, and had come back in time to warn me that soon I would make a decision that would ruin my life for the next decade or so.
I told him to shut up and called him an idiot.
You have a time machine and you waste it coming back in time to talk to me? You've already been here! Get the hell out of here and go see Gibralter Falls, or see the opening night of Hamlet at the Globe, or just go check out some frickin' dinosaurs while they're still alive!
He said he only had enough power for this one trip.
I congratulated him again on being a total dumbass.
Who gives a crap if my life is going to suck for the next ten years if I get a time machine at the end of it? Sounds like a good deal to me! You've succeeded in changing the past, because I'm going to spend the next ten years thinking of better uses for a time machine than this.
Then my future self disappeared, his moronic existance erased by my decision.
I guess I could have asked what my horrible decision would be so that I could get a time machine and have a life that didn't suck. But that might cause me to not get a time machine. In fact, I'm going to start making bad choices right now, just to be safe.