You basically have the same stance on the game as I do. I appreciate how you went about this, maybe people who are unsure about why the PC community is in such an uproar about the the mess will understand after reading this.
Im still debating whether or not to buy it on 360 or PC.
Who says you wont have fun with it when playing alone? I guess the co-op is an added bonus, but I hardly think it will make a huge difference when it comes to enjoyment. It isnt even out so we will have to wait and see.