Or maybe because its a single player game.
Just leave it at that guys.
I don't understand gamers today that require multiplayer in everything. Whatever happened to gamers being loners who sit in dark rooms alone playing.
That time is gone
Modern gaming has evolved into something that (mostly) uses online connectivity to connect gamers together in some way. While there are people who still savor the lonesome game playing in a dark room, times have changed and lots of people like multiplayer. It adds a completely different feeling to the game rather than just sitting next to someone irl and watching them.
You can't not say Skyrim wouldn't be better if it had multiplayer; I'm not saying it's bad in any way, shape, or form, i'm simply saying things would be better. Everything can improve somehow.