12. The sun
Doesn't matter if it's peeking through the high-rises in the FiDi (wait, no that was just a reflection, still totally dark over here), or you're bathing in it in Dolores Park. When it gets sunny, it's like the whole city is having a BBQ party... and everyone loves those.
13. That the city is completely walkable
If you wanted to, you could walk from one end of the city to the other in under a couple of hours. And if you wanted to do it while going around the Tenderloin, you could probably do it in under three.
14. UberX. Or Sidecar. Or Lyft. Really, anything that isn't a taxi.
Oh, you want me to fist bump you when I get in, too? Awesome.