The constant noise of traffic in and around our neighborhood:
-- while our area is not as busy and noisy as some other neighborhoods, there is certainly a constant hum and buzz of cars stopping and starting and moving around the area. The other thing we hear often is the fog horn from the Bay. Since it's almost always foggy right now, it's a constant companion. And it sounds every 14 seconds at night - go ahead, time it. At first this drove me a little crazy. Now it's like the soundtrack to life. I even noticed when I went back to SC that it was almost too quiet to sleep...
Walking up hills like this:
Hearing the Friday and Saturday night party outside our windows:
-- We live right off a trendy, popular strip. While that makes for great convenient access to shops, restaurants, and other fun, it's also a big singles' area. When we first moved to San Francisco, I would lie awake for hours listening to happily intoxicated young adults walking home. Sometimes we hear singing...loud singing. Now we hear it, but it doesn't keep us awake.
Using public transportation:
-- While I was committed to using public transit when we moved, it was still a major adjustment. I would plan to a minute detail when I had to go anywhere and would be nervous the whole time that I would miss my transfer, stop, or end up in a place I shouldn't be in. Now I have no trepidation when I have to go across town on the bus. No problem.
Seeing this outside my windows:
I know there are some more things I need to get used to, but it's been a fun process!