I was struck by how friendly and helpful people are.
I wasn't sure what people would make of me, because I do stand out a bit, but I talked to quite a few(especially older) people who were very warm towards me.
I occasionally feel a pang of regret that I fell out with my first pen pal, because her family were some of the nicest people I've ever met.
And I liked being able to get booze out of a machine any time I want.