| Because the United States is a collection of states. This piece seems to be missing from your analysis. It's not about rural vs urban. It's about being in a different state. That still matters! An analogy: Imagine a subdivision with 10 houses. Nine of those houses have a single person living in them. One house has a family of 15. When we go to vote on new rules in the subdivision, the unit of voting is the house. We don't let the family of 15 control the entire block. It doesn't matter that this means those 15 people get the same vote as all the single people, because that's not the voting unit. The logical unit is the house. They can vote within their house about policy within the house, but they vote as a group on neighborhood policy. This is federalism. The unit is the state. Missourians combine to form a vote, just as Californians combine to form a vote, and so on. Individuals within the state vote individually on issues within the state. But they don't vote as individuals on national policy. Their votes are aggregated by the state in which they reside. If this seems odd, it's only because modern Americans have largely stopped thinking of the United States as, well, a set of united states. But that's exactly what they are. |
- The direct proximity and very small population allows changes to be discussed in person and in detail. A citizen of a nation is not able to discuss changes with his/her fellow citizens and develop anything meaningful out of those discussions due to this inability.
- The types of policy changes a small block of houses would vote on is almost NIL, with maybe an exception for HOAs.
- Your're analogy doesn't consider that that house of 15 people generates 90%[1] of the GPD of the subdivision. This isn't to say votes should be based on wealth generation, but rather to remind you that there's so much wealth generation there because of the larger population, and it's in the interest of everyone to create policies that facilitate the growth of the GPD (and policies that will attract and allow intelligent people of all nationalities and backgrounds)
- A family of 15 is still two parents, who count as two votes, not 15.
[1] 15/24 = 63% --> 63% * 50(states) = 31 states. The top 31 states generates 90% of the GPD