If you create an alternate timeline when time traveling, and you are guaranteed not to alter your own world (altering only another one, which you don't care about), I can see an monetary incentive to time travel: time tourism. Provided it can be achieved for an inexpensive price, it could work. There might be a market for hunting megafauna. Or LARPing in London's 16th century. Or worse, spend a competitive week-end trying to kill Hitler with your high-tech weapons, not because you want to make things right, but because "Hitler killing contest" always sells all the tickets every week-end.. It might not be fun for the people of the alternate timelines, but the idea of the first society to create timetravel messing up with thousands of timelines out of boredom has some strange dystopian appeal. There might be some who would care for the alternate timeline denizens, and call timetravel a tool of Evil, but they'd probably be a small minority, with most people just being happy to call them NPCs and ignore their plight.
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