The Obsolete Notion of States in these United States

Here's a factoid for you: Roughly half (23) of our states have fewer than 4 million people living in them.

Trump Counties in Red

That's the population of the Washington, DC area. 
There are 14 metropolitan areas with more people living in them than 23 of our states.

1	New York-Northern New Jersey-Long Island, NY-NJ-PA	19,006,798
2	Los Angeles-Long Beach-Santa Ana, CA	12,872,808
3	Chicago-Joliet-Naperville, IL-IN-WI	9,569,624
4	Dallas-Fort Worth-Arlington, TX	6,300,006
5	Philadelphia-Camden-Wilmington, PA-NJ-DE-MD	5,838,471
6	Houston-Sugar Land-Baytown, TX	5,728,143
7	Miami-Fort Lauderdale-Pompano Beach, FL	5,414,772
8	Atlanta-Sandy Springs-Marietta, GA	5,376,285
9	Washington-Arlington-Alexandria, DC-VA-MD-WV	5,358,130
10	Boston-Cambridge-Quincy, MA-NH	4,522,858
11	Detroit-Warren-Livonia, MI	4,425,110
12	Phoenix-Mesa-Glendale, AZ	4,281,899
13	San Francisco-Oakland-Fremont, CA	4,274,531
14	Riverside-San Bernardino-Ontario, CA	4,115,871

Would it not make more sense to give each of these 2 United States Senators than to allow 23 states with fewer than 4 million people to have 2 Senators each?

Clinton Voters in Blue