I've lived in San Francisco for almost ten years and I love it here. I'm from Montreal, Canada. I miss the people and the language but not the weather.
Some things I like, in no particular order:
rock climbing (indoors and out)
my sleeping bag
learning a language
big dogs (but I don't have one)
My worst nightmare is having a suitcase too large to fit in the overhead compartment.
I'm brand new to airbnb but I'm a great guest. Tidy, considerate and polite.