Most the guys I traded with were the typical middle aged german males.

Fortunately Germany treats bitcoin as "private money" so it's legal for private individual to individual sales. But since it's a currency you can't set up an exchange without going through the legal requirements of a currency exchange. That's why localbitcoins is not able to run in Germany (unless they want to go through all of the legal red tape).

I stopped when I started getting Eastern European customers that were shady. Like I said, I wasted my time and gas with a lot of transactions.