Maybe this is a necessary evil in a day and age when a society is not all on the same page with respect to morals and values. It sure would be nice to have everyone proactively choose to act in a way that matches the "spirit" of the law or rules, and maybe this did used to happen in more homogeneous/authoritarian societies? But without that synchronization it seems to fall to the legislative bodies to codify as much as possible of the various moral behavior which is very hard in practice and easy to exploit.

This is hard to discuss with precision because there is a lot of subjective judgment involved. Cutting lines is not against the law, so should you do it to avoid wasting time waiting? Occasionally a rightmost lane is in practice used mostly for right turns, but marked as both straight and turn. Majority of people seem to understand it's a jerk move to block that lane for the turning traffic, so it's usually empty, but every now and then some greedy SOB takes it to overtake the herd. Personally I find this kind of thing despicable and do what I can to prevent it.

I'm sure there is some evolutionary biology connection to fairness and why we behave/feel this way.