Oh yes, I would profit indeed. I would only have to go back in time 6 times in one year for approximately 45 minutes each time (total lifetime lost to time travel? About 3 hours) yet I would easily reap
several hundred million dollars without significantly disrupting the timeline (during my lifetime, at least). I mean, worst case, I would end up sharing the jackpot with 6 other people rather than them getting it all to themselves.
And then the fun would begin. I could:
...bring back a dubstep CD and really mess up one of those "you bring it, we play it" club nights.
...find out what happened to Jimmy Hoffa.
...track down a few items I have lost over my life, see where they went.
This is all only counting the things I'm willing to talk about, of course.
--Patrick