Earlier quoted context omitted.
Im pretty sure that even after adjustment, savings rates for software engineers in SF is much higher than in Berlin. There are many perks to Berlin over SF, but salaries and net income are not it.
So why are you even comparing the two and not e.g. working for Google in San Francisco and Zurich?
Im just emphasizing that the fact that europe has benefits, it does not necessarily (or likely) outweigh the difference in salary from one to the other. You are certainly taxed more by a lower wage and by a higher tax rate that could compensate ubering every day and private schooling.