Auf Wiederschauen, Wien

I'm leaving Wien in a few hours. Right now, I'm sitting in my hostmom's kitchen. She's still in the Krankenhaus, recuperating from surgery, so my roommate and I are the only people here.
I booked a taxi to get here at 4am, which is in 1 and 1/2 hours. I'm not sleeping tonight, obviously, and I'm debating whether I should go outside and walk around.
I almost can't believe the time has come to leave this place. I can definitely see myself living here. I love Viennese culture so much.
A few things that stand out to me:
1) The Viennese are so polite. When you walk into a shop, you instantly greet and are greeted by the proprietor. When someone steps on you in the bus, they instantly say "Entshuldigung." Of course, not everyone is polite, but that's to be expected.
2) Public trans. Everyone and their grandma and their dog rides the public trans. I love it. It's not uncommon to have to duck around dogs and strollers to find a place on the metro, busses, or streetcars.
3) Like I've mentioned many times before, there's so much to do here! I hope I won't be bored too much in Indianapolis
There are more... but now it's impressions time.
...people riding the U-Bahn, clutching a can of their favorite beer in their hand...
... the man last night, who dropped part of his chocolate bunny on the bus floor, then proceeded to pick it up and eat it. I was riding the bus with Georg, an Austrian guy, and I asked him if there was a 5-second rule in Austria. He said Austrians have a 30-second rule...
... the dog pee on the sidewalks everywhere!...
... the old people wearing traditional Austrian alpine hats, men and women alike...
... speaking of old people, the older women here have very distinctive views on artificial hair color. Tonight I saw a lady with light blue streaks in her white hair...
I'm sure there are more, but I'm so scatter-brained from packing and lack of sleep that I'm not sure what I'm writing anymore. Must... not... fall... asleep...
Taxi will be here soon, and I have some dishes to wash and odds and ends to pick up.
America... here I come, Vienna... I love you so much! I'll come back again if it's at all possible!