On the level of your personal contacts, when you start up, you'll mostly not be (morally for example) supported in your intent by your family, friends, peers. Most Germans want a secure job, working hours from nine-to-five, their (circa) 30 (working) days vacations etc. And will most likely aim for that (or eventually fall into the safety-net of the social state) than risk starting their own business.
Second problem is your future: If you start a company and it fails many doors will be (in many cases firmly) closed afterwards making it harder and harder with every failure for you to start again.
I'd say that a safety-net everywhere (!) isn't good. Because, when you put safety-net everywhere, everything becomes overregulated. Favorite joke in Germany is that, because most garages don’t have windows and laws forbid working environments without windows, Apple, Hewlett-Packard and many other garage start-ups wouldn't be possible.
On the other hand there is a lively startup scene and especially the online business is quite forgiving so it's not the same everywhere in germany.
Also, in China, many people don't respect people who start companies. I often hear the opinion that business people almost need to be devious and unethical to succeed here.
Plus, there is no comparable appreciation for smaller, boutique, local companies here that there is in the US. The notion that 'small can be good and premium' and 'big can be bad and faceless' doesn't really translate. If you ask a person if they think they'd get better quality at a little, specialized cafe vs. a Starbucks, most people would pick the Starbucks (unlike in the US, where Starbucks has been experimenting with running 'stealth stores' where they don't display their logo and which they attempt to customize to the neighborhood).
Of those, #2 might be the biggest difference? I feel that in the U.S., #1 is actually still pretty strong, at least as far as reactions among non-techie family/friends go.