The thing that bothers me the most about Avengers vs. X-Men honestly isn't the content of the story, but rather how some of the fans seem to react to it. I realize that some of this is all in good fun (it's a comic book, after all) but sometimes I'll come across a comment that completely slams one side of the "battle" and want to cringe.
The thing is, I like both the Avengers and the X-Men. I'm not really rooting for anybody, because I believe there are individuals on each side (of which I think there are more than two) who are correct and some who are not. I can't see myself completely siding with one team, because they both are made up of some smart, interesting, powerful people who have something to contribute to the conflict. However, if I were to lean in one direction or the other, I feel like I'd be assaulted with slander toward that side that doesn't even apply to me.
If I agree with the general sentiments of the X-Men, then that must apparently mean that I think Cyclops is amazing and always right. Except that's not true, because I think that, while Cyclops is tactically smart, he's also got some problems that need ironing out (to say the least).
If I agree with the Avengers, then I'm apparently an un-American, oppressive bigot who beats up kids for funsies. Except not all of these Avengers are actually involved because they think this is the perfect solution- it's just one of many, more terrible solutions, and people are just making due with a crappy situation that escalated fast.
I particularly take issue with the idea that the X-Men will "lose" if Cyclops goes down. Last I checked, most of the Jean Grey School's inhabitants aren't even involved, and they're still considered X-Men (I'm talking about the staff too, so let's not argue semantics). And if some of the students did get involved, let's not be naive enough to assume they would do so because they're in full possession of all the facts. Which could be said for a lot of people on every side, actually.
What bugs me the most though is this idea that, because one likes a certain group, this means that they must be better and more deserving of the "win" in the end. Arguments about whether or not the X-Men could take on Avengers villains seem kind of crazy, considering the threats the X-Men took on themselves (like the Phoenix, among countless others). Likewise, I don't understand the need to slam the Avengers for not getting involved in previous mutant affairs since, you know, they had other stuff to deal with, and I don't remember the X-Men asking for much assistance recently.
There's also the fact that these characters and the situations they get into are fictional and largely meant to be separated, so they can have any hope of functioning narratively without near-constant interruption.
X-Men Legacy's last issue sparked some interesting debate over a few Avengers showing up to watch over the Jean Grey School. Naturally, friction built up. But I was surprised by how many fans decided that either one side was completely right or completely wrong, when the book never seemed to be suggesting that at all. Each side is justified from a certain perspective, they both go too far, and things get nasty. I can't really imagine just accepting one team as the totally awesome ones and the other side as the losers who got it wrong. They're both "wrong" in some way. As fictional characters, they're written with enough dimension that it's not so simple.
I get that this event will likely end a certain way, with one side backing down moreso than the other. But I guess I'm just not expecting some spectacular defeat of an entire line of superheroes just because that's the story. I don't think that was ever the point, and I would be truly shocked if either the X-Men or the Avengers were destroyed by this event. They're groups of individuals. Some of them will screw up to crazy-ridiculous levels. That doesn't mean every man, woman, and child on "their side" goes down with them.
And, for pity's sake, please stop acting like X-Men fans have no place in an Avengers forum and vice-versa. Guess what. Some X-fans are also Avengers fans. Relax.