131
"I hate these damn bike lanes. Screw your studies. I'm not reading that"
"Cut gas taxes. I see no reason why I should pay to support public transit"
"Fuck speed limits. I'm proud to break the law"
This sense of entitlement is insane.
50 vs 49 or 51 may be arbitrary, but overall there's a relationship between speed and car accidents which makes setting speed limits a real judgement call.
And remember that kinetic energy goes up with the square of the velocity, so a crash at double the speed is theoretically four times as deadly. Even modest reductions in speed greatly increase survivability of an accident.