I have over 115 hours in Skyrim and the only cities I've been to are Whiterun, Windhelm, and Markarth. I'm not very far into the main storyline, though I did get far enough to learn all three parts of the Fus-ro-dah I stopped almost immediately after that.
That's just my preference, I was the same way in Oblivion...etc. The problem is, despite how much I like Skyrim, it's a game that simply didn't hold my interest nearly as much as Oblivion and I think it boils down to the complete lack of difficulty. You might say, well there are mods for that and I did download some of them, but I never found one I felt was acceptable. There was a good dragon balance mod though, I did use that. It made dragons devastating, capable of wiping out 20-30 guards...etc. But not overwhelmingly so. It also gave them much stronger resistances to magic...etc. Great stuff.
But the game in general... it was such a cakewalk that I grew bored. Immersion can only take you so far when there's no challenge. Maybe it was my playstyle, a mace + shield, heavy armor warrior... I just crushed everything in my path after maybe level 15 onward.
Maybe there's an OOO for Skyrim or some type of equivalent. I haven't checked... but I know I could totally get back into it if there was. Some balance mod universally accepted as awesome...etc.