The Constitution isn't meant as just a guide for learned men in black robes. It is a guide to allow citizens to know when those in government are acting legitimately and when the citizens need to employ corrective measures. Unfortunately, citizens have for so long ignored overtly unconstitutional acts by government personnel that it's unclear how to return to a fully legitimate constitutional government.
No, we wouldn't.
Disagree. What we had, have, and are in danger of losing, is a cultural heritage that encourages effort, responsibility, and cooperation. IOW, a civil society, which we got from English ancestors.
If you look at Africa, you'll see discord along tribal lines, and absolutely no history of a civil society. Mugabe runs his country as sub-Saharan Africans have always run their countries.
I fear that our own society is losing its civilized roots, and that we will have a lot of big cities looking a lot like Mugabe's Zimbabwe. It may become, if not the norm, at least very common.