'Do I think guns are a good thing?'
No, I don't think guns are a good thing. But, unfortunately, that Genie cannot be put back into the bottle. I don't any implements of death and destruction are "good" and I wish people didn't steal from other, didn't assault others, and didn't kill others (or themselves). But, unfortunately, that is not the world that we live in.
In a world fraught with life threatening dangers, people need tools to defend themselves from those dangers. The vast majority of gun owners don't ever want to be put into a position in which they have to use their guns -- despite what you may think. Their gun ownership abides by the Boy Scouts of America's motto, "Be Prepared." Further, most adhere to the notion that "it is better to have it and not need it, than to need it and not have it."
Can anyone possibly deny the fact that there are, in fact, situations in which one's own life, or the life of their family is at risk? Are those people simply out of luck? Are they supposed to simply accept their victimhood without a fight? Millions of crimes are thwarted every year by armed citizens -- most don't even require actually firing the gun, simply brandishing it is sufficient. Again, are you advocating to deny these people the right of self-defense?
Criminals looking for victims are very unlikely to target those people that they know, or even suspect, are armed. Thieves, rapists, and murderers are opportunists who, for the most part, have a strong sense of self-preservation -- despite how Hollywood portrays criminals, they're not looking for a fight, they're looking for easy victims.
The statistics are quite clear that in states a well armed population, like my home Texas, there are FAR few home invasions, than in places where there are strict gun control laws like the UK, Canada, and the Netherlands. Criminals are emboldened by a disarmed. They know the time it takes the police to arrive will afford them an easy window of time to complete their crime, and they know that they're not going to meet any armed resistance.
I agree with the fact that shootings like the one that just occurred in CO are tragic. But, there is FAR more at play in this, and other cases like it, than simply access to guns. There is a thriving black market for guns where convicted felons, who aren't allowed to purchase guns lawfully, and those that don't want a gun to be registered or traced to them, can buy anything they want. My point is that someone that is willing to do what this guy allegedly did, wouldn't necessarily be deterred by the laws. Even if he, a formerly law abiding citizen would be, already hardened criminal won't be.
I know you guys think the solution is simple, and I know you guys like to disparage Americans. But I think you're wrong. I think most Americans, even the pro-gun sectors, are HORRIFIED by these incidents. The difference is, the anti-gun people say ban then all and this will never happen again. I see their point, but I disagree. Personally, I think that if there were armed citizen in that theater that night that whack job a) wouldn't have gotten off more than a few shots; and b) would be among the dead himself -- which is where he belongs.
Until such time as deadly force is NEVER used against another human being, NOBODY has the right to take away another human being's right to defend himself against such force.