For a while I was sticking to a strict no time traveling rule, but it was taking forever for anyone to move out. It was really cutting into my enjoyment of the game because I had so many villagers I didn't want in my town >_< I recently started TTing just to get villagers out of my town, and I've now only got 1 dreamie left ^_^ If I had stuck to my no TT rule, I probably would have gotten really frustrated at how long it was taking to get all my dreamies and I may have just kept villagers I didn't actually want.