US vs Europe

Being in Europe now, I am starting to realize the colossal differences between these two continents. This is no surprise, as the same cultural gap exists between Asia and Africa, the other two continents I have visited, however it's still impressive...
First things first, I find that Europeans are relaxed. I walk in the street and feel like i'm jogging compared to the rest of the walkers...This might have to do with the fact that it's August and everyone is either on vacation or working in an almost idle state, waiting to leave for vacations =)
Then, the food. I am losing weight by eating more. I don't know what's wrong with food in the US but I am definitely eating more and exercising less but still I lose weight. This could be due to preservatives or jet lag so I will give it some time!
Next thing is the traffic lights and driving in general. I was surprised to see the traffic light across the intersection but it actually makes sense...Today I was waiting at the traffic light and a bus stopped right next to me blocking me the view of whether the light is green or red...And of course you can't see the perpendicular's street light either!
Mass transportation. That's a huge difference. Even though San Francisco admittedly has "some" means of public transportation it's still worse than a middle sized town in any small sized city in Europe. The reasons are well known like spread out suburban areas etc, however this is definitely one of the most amazing differences!
Attitude about drinking/smoking. In the US noone can buy drinks if she is under 21 and yet you see people drinking out of semi hidden beer cans in the street and every single sorority/fraternity person being drunk near lethal dose in parties...In Europe ( minus UK I guess but that's a different story :) ) everyone can buy drinks and yet you don't see people drunk on the streets ( except for the same people from UK mostly! ) and you don't see pretty much anyone drinking on the streets or being drunk in a club. I don't know what's about the culture that is different but I definitely can't help but pointing this out...
Regarding smoking, in the US you see people not smoking in general and even people who smoke do it sparely and you feel like they are feeling guilty for smoking. They have a quick bum and get back to continue with their lives. In Europe you see people not only smoking like this is their last cigarette but also integrating smoking with their everyday lives. For example in Amsterdam you see people sitting in a bench and smoking while tanning.
These are the first ones i pointed out up until now, i will try to keep this post updated with anything else that makes me think like "this is interesting" !