They are retained because Germans like such restrictions, not because anybody is forcing them to
Suuuure. In your righteous crusade against the stupidity of Germans, you're overlooking some realpolitic problems with your sentiment.
First of all, such a move would be political suicide. Political opponents of the politician proposing such a move would rejoice because he just gave them a big, fat bullseye. And don't tell me that other countries are better in that regard.
Secondly, there's the international level to be considered as well. Israel, for example, would be thrilled while we would probably get applause from countries like North Korea. Yeah, that will work well.