I've visited about half the states and would choose Kentucky as the most beautiful.
But armpit, that's tough.
Most boring state to drive through? Ohio. (has to have competitors, though, in the west)
Ugliest city? Albany, NY.
Worst traffic? Houston, TX.
Loneliest place? Mountains of West Virginia
Armpit? -Hot, sweaty in the middle of the summer? -- The bayou of Louisiana. Don't try to drive through New Orleans, in July, with no air conditioning, as I once did. Very bad idea.