Why do many political issues seem to divide along urban and rural lines?
Does the urban and rural generalized mindset highlight an innate desire for complexity and simplicity, respectively?
Does degree of socialization or interpersonal trust play a role?
Could the urban vs rural divide be a manifestation of collectivist and individualist leanings a la East vs West?
Does urbanity shield from harsh realities (fragility of food production, for example) that make ruralites more risk averse?
But why are they reluctant to change? You mentioned immigration and jobs but also that it doesn't really affect ruralites. Is there a personality trait or life experience or similar that could explain why people identify with those reasons? Or maybe there is an opposite dissatisfaction which drives urbanites to change and novelty.
I agree about the young/old split. Young people tend to be riskier and more open to change and cities do attract more young people. I don't know if it's enough to explain the urban vs rural divide, if it exists.
Dissatisfaction with the government and career politicians does seem to drive a lot of the "populism" today. It's not unwarranted, but it comes with its own dangers.