As someone who takes my Christian faith very seriously, I'll offer a response. I can go down the road of why I think everyone should be a Christian, but I recognize that everyone gets to choose, and not everyone wants to. We could get this thread locked pretty quick.
What I do see are the same cultural shifts that everyone else is discussing on this thread. The United States is not, and never was a "Christian nation." A nation cannot be Christian; only individual believers can be Christian. However, the historical widespread adherence to Christianity had a substantial effect on American society as a whole. Most of the time this was overwhelmingly positive, but unfortunately it has also been abused at times. Relating to what
@okie archer wrote, I see a couple of shifts that I think are valid whether you subscribe to Christianity or not.
First, our culture is shifting away from an absolute standard of morality to everything being up to the individual. Historically, the Bible had a significant effect on the formation of this standard. Be honest. Love your neighbor. Don't cheat on your spouse. Don't kill people. Even people who broke the rules knew what the list of rules was. You could be trusted with a shotgun in your pickup in the school parking lot, because there was a sense that you knew that shooting someone with it would be a horribly evil act. However, as we decided that some parts of an absolute moral code no longer applied (Christian or not), I see it as a natural progression that "Thou shalt not kill" is losing its grip as a universal moral principle today.
Second, as our culture has moved more intentionally away from Christianity in the last few decades, we seem to have equated that with moving away from spiritual input of any kind. In the complexity of what makes us human, I'm convinced that there is a spiritual component to each of us. For some people, Christianity or another religion fills that role. Some people sort of roll their own ego into that role. Some people struggle with life because they don't find anything to fill that space. Again, as we've moved away from Christianity as the major player of this role in our culture, I fear that we've left succeeding generations with a lack of anything to fill that hole. Some maybe have done okay, but I suspect that some on the fringe have been left more vulnerable to the darkness of this kind of violence.
You can agree or disagree as you wish. No one is required to think the same as me. However, this is also why I don't believe any legislation will fix school shootings. There is selfishness and emptiness in people's hearts, and no legislature has a solution for that.
QQ