The point is to change it. If you change someone else's past, they're the beneficiary.

This thread is about breaking the #1 rule of time travel in most fiction: Thou shalt not use time travel for personal gain. Well in this thread, you can only use it for personal gain, or the personal gain of those close to you. Not physically close, like the freaky lunatic the next apartment over, but friends, family, smurfbuddies, and the entire population of Pitcairn's Island.