Annoyingly sometimes a main road or highway is the only way to find relatively flat terrain. Where I live the moment you are off the main road you're into endless hills, makes it difficult if you're trying to keep your heart rate in a certain range!
Though completely agree about using suburban streets for running. Much nicer than major roads!
Agreed, if anything I'd like to see mandatory civic classes added to the curriculum before reducing the voting age. There's no point in lowering the voting age if people fundamentally don't understand how our democracy works.