Glory to the Alliance!
http://www.fanfiction.net/u/1313358/
^ My fanfiction. You should go and read it. And leave comments on it. Yeah.
No. Just no.
OP, you're either an idiot or a fairly convincing troll.
It's hard to tell sometimes. :|
I'll humor you, I guess.
Before Halo came along, I never really played FPS games. I originally bought Halo purely because the universe and the stories within it appealed to me. (Of course, since then I've discovered how much fun FPSs can really be. :D) While I've come to enjoy the multiplayer, the campaign is still my favorite part of the games. So, I would say that, to me at least, campaign is far more important than multiplayer. And, as you can see, there's plenty of others who feel similarly.
Also, OP, just because you're not skilled at something doesn't mean you can't enjoy it.