Biggest sacrifices: Germany is an ethnic monoculture, and Germans aren't too friendly with darker-skinned foreigners, especially if you are vaguely Turkish-looking. I also had to learn German, which was an uphill battle considering how German people treated me.
Gained: Great health insurance and access to cheap and convenient travel throughout the rest of Europe.
I moved out of Germany after 2 years of trying, and failing to assimilate. Now I live in South America.