You are painting a rosy picture of entrepreneurial life in Berlin. That's fine, but entrepreneurship in Germany has several downsides including:

-Less VC funding -Regulations make it distinctly harder and more expensive to fire employees -A less risk-tolerant culture -A completely different mindset around "misses" - if your business fails once, you are labelled as a failure and will have a harder time getting support and funding in the future.

The economist had a touchstone article on this, which appeared on HN the other day: http://www.economist.com/node/21559618