No.

No

While I was a part of the initial MP beta back in june and I immensely enjoyed it, I don't think I'll delve into the MP aspect because I don't want someone with a mic who got further them me running the game. 

No. And anybody who does otherwise is gonna be pretty stupid because no matter how good the multiplayer is (and it is goooood) the single-player is gonna (way more than likely) be ten times better.

No, i will definitely finish the SP part at least once before doing MP.

Well I did already play the demo but I always finish the single player in a game before I start the multiplayer.

SP before MP so no maps, guns, characters or people with mics can ruin the experience of discovering everything for the first time.

No way. I always play through single player campaigns before starting multiplayer as to avoid spoilers.
 
The one game I didn't do this with which I regretted right afterwards was Gears of War 2. I played Horde mode with my brother and our friend before playing through the single player and got spoiled on a bunch of the enemies and weapons. It is nicer to have those things introduced in the campaign at key points instead of having them all thrown at you at once.

The single player's always been my main attraction to this game. Don't get me wrong, the multiplayer is tons of fun and has helped me gear up for this game. But there's so much more in the single player for me.

yeah definitely. ill play the sp as much as a can but if my friends sign on of course im gonna take it online. the online is excellent dude

The multiplayer is alot of fun, but i've been playing it quite alot in the public beta so at this point im just looking forward to the single player which is really the main thing im interested in at the end of the day, although im sure i'll sink plenty of time into the co-op side of the multiplayer in the full product.

Doubtful.

Nooooooooooooooooope. I've never played multiplayer (excluding campaign co-op and Warcraft 3) before beating a game's single player and am not about to start now.

I'll go back and forth, just to make sure that I don't fall too behind with my MP level/rank.

I beat the single player on hard the day after I bought it. I then did 1 game of muliplayer haha. I think I want to beat it on crushing before I do too much multiplayer.