An abandoned campsite near my apartment

I went down to the subway at about 6:30 this morning and came across the remains of a campsite just outside the turnstile. 

I rarely ride the train so early and, in four years, I have never encountered an intimate scene like this at my local station. A new box of toothpaste sits in a plastic basket. There's a 2L bottle of Coke – with a few sips left –  and a package of disposable razors in a cardboard box on top of a bathrobe. The not-quite-empty bowl of soup and the frozen, half-eaten banana seem to suggest that the squatter left in a hurry. What made them leave?

I wonder if they'll come back for their stuff.