Different cultures have such dramatically different ideas about what laws they should be governed under, throwing them all into one set of rules is tyranny of the majority. California gets to feel that strongly right now, with Republicans owning 2/3, and soon 3/3 branches of the government.
More people get what they want when you have a larger number of smaller countries. California could have a democratic president and Texas could have a republican one. They don't need to hate how the other votes.
If the concept of States' Rights had been more faithfully adhered to, more states would enjoy a greater feeling of autonomy. Instead, collectivism was embraced.
California Democrats were loving it when Obama and the Democrats were in control in 2008. Couldn't they realize that sooner or later the pendulum would swing the other way?
We're about to witness an object lesson on why you enforce the rules even on your own party - even when the ends seem to justify the means. Think about the overreach of executive orders and the suspension of the filibuster as tools in the hands of the opposing party.
More people get what they want when you have a larger number of smaller countries. California could have a democratic president and Texas could have a republican one. They don't need to hate how the other votes.