What I will miss of Germany

I woud like to ask people who lived in Germany for a while and now are somewhere else what do they miss of Germany. Some might say the beer, some others the perfect organisation of many public services, or others again the exhausting bureaucracy.
For me, I could think about two things in particular right now.

Happy people

I would like to ask why some people are so nice and helpful, like they always have a big smile on their face, and some other always make trouble and see the dark side of everything. These last ones seem to just absorb your energy and spread tiredness and willingness to complain. The other ones remind you with the most unexpected and little things that there actually are nice people around.
I would like to be one of these happy-spreading walking stars. They are not always fakely hypocritically happy, they have their bad moments, but they don't accuse the world for them. They just think, "Oh, whatever, I can't do anything for it, so who cares" and they don't get bothered. I'm envious!

I would like to ask what is their secret. Green tea? Pills? Sex? Innate wisdom? Happy family background? Well, I will just try to stay nearer to them... get some of their light, and learn from them. I hope I will! 

Dreaming, dreaming

I would like to ask whether you ever had this feeling you took all wrong decisions in your life. You do your stuff every day and you keep thinking about how many other things you could do, how much time you do NOT have to do what you enjoy, how many other people you could meet, in which other place you could be. You start dreaming and dreaming, and then you stop thinking about the relative safety your job and daily life gives you, and then you start again. Many job seems better than yours, many places seems better to leave than when you are.