One of the things that I think is really interesting about some of the arguments that are taking place is that people only like to apply real world logic to the situations when it suits their argument. As readers, we have a different perspective on things than the characters in the stories because we can see the whole picture. We can look at that panel with Wolverine and Hope and say "Well this is only issue #2 of 12...so Hope's more than likely not going to destroy reality this issue." We can also flip through the pages to the end of the story to see how people's decisions pan out in the end. This is what Wolverine sees when he comes into the room:
Now, MikeKerIII said something like "Wolverine would be able to hear their heartbeats and hear them breathing when he came into the room". I sincerely doubt that he would have. Using real world logic, literally the first things he would have noticed were what he saw with his eyes, and what he was smelling. Breath control and heartbeats are very faint things to notice. Even though Wolverine has enhanced hearing, he doesn't have Daredevil level "pin drop from a mile away" hearing. His sense of hearing would almost certainly be overpowered by his other two senses. He SEES Hope...on FIRE...cackling with Phoenix power. He SEES the other LIGHTS laying around her incapacitated. He SMELLS the cackling fire...he SMELLS the smoke and steam coming off of the bodies. All of this happens within a number of seconds. He make a reaction based on the information he gathers in those two seconds.
Now, as I mentioned before, we as readers can say "Well he should've waited for back-up", or he should've done this and he should've done that. We can form these opinions because we have the luxury of being able to finish the book, and analyze the information that we've gathered. it's the whole "Monday Morning Quarterback" thing. Wolverine doesn't have that luxury. To Wolverine, the Phoenix is a ticking time-bomb waiting to go off...and he acted...to save his school and the whole world. Superbeast said that Wolverine didn't have solid proof, but if you come into a room, and someone's holding a gun, and everyone around the room is lying there shot, that pretty damn incriminating...even if the person holding the gun didn't shoot anyone.
Also, people keep saying that the Phoenix has been used for good in the past. No one is denying that.
People also shouldn't deny then that the Phoenix has killed billions of sentient beings on more than one occasion. The Phoenix has shown itself to be several things, including being jealous and susceptible to control and manipulation. So, at best, it's an unstable cosmic entity with boundless power. As a reader, you can say what you would have done or what should be done in a situation because a) it's not real and b) you have information about all of the factors that come into play regarding the story. You can say "oh, well the Avengers are going to win this because they have a movie coming out this summer" or "Well Cyclops is going to do this next issue because this writer has a tendency to write him that way". The characters in the story can only go off of what they're experiencing within the confines of the story...so they react differently. Wolverine, in this situation, doesn't know whether Hope's going to blow up the world in the next 30 seconds. Given what Wolverine saw, it was perfectly logical for him to react that way.
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