Each year the annual COD release on consoles is huge on consoles (bigger than on PC). FIFA is similarly huge in Europe. Halo, one of the biggest console exclusives, is praised at least 50/50 for it's single/multiplayer content. Online gaming is a big part of console games, even if it isn't for you.
At the same time, most of the games you mentioned as single player experiences are available on PC. Plus many (I'd say most, even) PC-exclusive titles are heavily single-player focused.
Obviously, this doesn't affect your personal reasoning, but I don't think it's shared by many people.