This is a really interesting thread, and I want to thank everyone who shared their experience(s) in Germany (and Switzerland and Belgium). I learned a lot and will probably come back to re-read this.
I lived in Germany (former East) for a year in high school and have a lot of German friends, so I thought I had a pretty good understanding of German culture. One thing that I have high respect for is that all of my German friends seem to be very hard working and have pretty solid heads on their shoulders, especially financially. Debt-averse, high savings, etc. in stark contrast to most Americans I know.
So I was pretty shocked the other day when I casually mentioned at dinner that I had opened an investment account. Everyone at the table stared at me like I was crazy, including the Mexican girl who had joined us. To their credit, everyone asked a few questions and didn't completely jump down my throat, but none of them had ever heard of an index fund and they pretty much to a person tried to talk me out of it. One commented on her safe investments in gold... Talk about a huge cultural gap.
My German roommate who is a bit more financially savvy (MBA, entrepreneur of a software company) has even had a highly skeptical reaction, even though we tend to agree on a lot of other personal finance matters. I mentioned to him I was excited I had seen some gains this week, and he just commented that it's always fun to see it go up, but not to see it go down. Which of course is true, and is part of the reason I decided to use a robo-advisor allocation so it's difficult for me to mess with. For now I'm just checking because it's fun, and it's giving me an incentive to continue putting savings into my diversified index portfolio rather than having it sit safely in my savings account (ok, maybe I act a little bit German sometimes).
This thread has been incredibly helpful in understanding my friends' reactions.
Re: Health Insurance
On a slightly related note, the downside to the German insurance system is that it doesn't cover you abroad unless you are a student. My expat friends have had to find separate private insurance, in addition to having to pay 50 Euros a month just to have the option to get back into the government system. This seems a bit ridiculous/unfair to me.