It's all quite interesting what you have put as "cultural differences". I am from Germany myself, but living in England with my English boyfriend. A lot of the stuff which you have put down as what you experienced in Germany, I have actually experienced over here as well: People who cannot wait to put the divider between mine and their groceries, young kids who have to make their way to school and home alone, general lack of hygiene in take aways or other public places ( I never knew what a stomach bug is until I moved over here), etc. I find that I do complain a lot about certain things, especially the state of the trains (as I am commuting every day) and the constant delays or seemingly random cancellations (without giving any reasons), or the health service, or the cider-drinking yobs, the plastic- bag- mania etc etc. My boyfriend can find just as many things to say about Germany. At the end of the day, I chose to live here.
I think you'll find the divider comment was from an American. We use dividers just as much in England .
My comment on food hygeine wasn't so much the preparation, but in the bugs that I see crawling all over the food everywhere from supermarket bakeries to fast food joints. Also dogs in restaurants. I know that out the back of British fast food places cleanliness can be terrible, and I've not had food poisoning once in Germany, but I never see flies crawling on the food in England. Here I have walked into bakeries and seen swarms of wasps crawling over the cakes.
Wasps in general seem to be a much bigger problem here, and I think it has something to do with the German attitude towards them. I sat down at a cafe in Coburg one summer afternoon, reached for the sugar pot, and saw that there was a wasp stuck inside of it, rolling about in the sugar. I took it to the counter and didn't even complain, just asked for another one. There were wasps crawling all over the cakes on the counter, of course. And the reaction? Tut tut tut! Such a fussy Englishman I was! It's only a wasp!
In England the town council will send a pest controller around to exterminate any wasp nests that you might find in your house, here I think it is considered cruel to kill a wasp nest.
But you are right, there are many awful things about England that I don't miss at all, and some of these things I often forget as I've not experienced them for a while. Not feeling safe walking around any town or city at night. Drunken yobs everywhere. Out of control teenagers. Terrible public transport, and a rail system so bad that it considers making it within 10 minutes of the scheduled time as being "on time". I do think the weather is better here, but it depends where you are. Frankfurt so far seems to be just like England.
I know what you mean about commuting on the train being a nightmare in the UK. For a year I commuted a short (45 minute) route to Oxford every day on a Virgin Rail line. For that year the company reported that it was late for more than two thirds of its journeys on that route (and you already know the definition of late). Cancellations were common, and the excuses were laughable. A regular excuse I heard the announcer make was "we are late because the train in front of us is late"!
