This guy went for the gun free zone, like many other shooters.
Link
At Halloween, he suggested, “there would literally be thousands of people walking around that I could kill with ease.” What thwarted this plan? “It would be too risky. One gunshot from a cop will end everything.” As it happens, the killer had foreshadowed his own death. The rampage ended when good men with guns closed in and returned fire, prompting their target to turn the gun on himself. It was ever thus.
If you read the manifest, you'd see that he always planned to shoot himself, it was part of the plan the whole time. The "good men" didn't stop him, he just wanted to maximize the amount of people he took with him.. It wasn't the fear of death causing him to cancel his plan. This was basically him just rescheduling it so he could make sure he killed more people before he dies.
I support the 2nd amendment, but it sickens me when people spin these situations in this way. It sounds to me like it places more blame on the people that didn't have the gun, than the person that did.