What is Travel?

Tonight I saw an article about travel writing. It's called "Travel Writing 101: What Exactly is Travel?" The actual article isn't super spectacular, but there was an interesting quote:

"Travel is a brutality. It forces you to trust strangers and to lose sight of
all that familiar comfort of home and friends."

--Cesare Pavese, an Italian writer of the early 1900s.

And isn't that really one of the reasons to travel?