Why The Return Trip Feels Shorter

Why does it seem to take longer to get there than it does to go back? “[P]eople are typically too optimistic about the initial trip, which then takes disappointingly long. So when they return, they’re now anticipating it will take a long time. But compared to this expectation, the return trip does not seem as bad.” Okay, I’ll buy it. I also would have accepted “something something jet stream.”