The US is happy creating laws for everything that are impossible to follow, but only selectively enforced.

Do you consider this insane? Your assertions that "everyone always must break the law" and "there are effectively no laws" seem a bit extreme. Ultimately, with any messy human affair, there is always going to be discretion involved, and I don't think implicitly codifying that is a bad thing. It does tend to work by and large. I've personally had much worse experiences with officials following the letter of the law than with them using discretion, but I admit I am not in any class that is often discriminated against.