Colorado Shooter- James Holmes. What Caused His Breakdown?

I’m sure by now, all of you have heard about the Colorado Shooting.

James Holmes, the man who shot, wounded and killed many people, had owned all of his guns and ammunition legally. Officers trying to enter Holmes apartment were perplexed by the amount of wires, trip wires, jars of liquid, and what looks like mortar rounds. I find it quite interesting, what would cause someone to do such a horrid thing, and rig his living space like that? He looks like such an average guy. James Holmes was a science scholar in college, he graduated with a neuroscience degree, but struggled with finding a job.
He ended up enrolling into A PhD program for neuro science, he was top in his class, and mainly focused on how humans behave. Quite interesting…
Teachers said he began to withdraw, and ended up dropping out. Maybe Holmes will confess his thoughts and explain why he had broken down and hurt so many. All the more curious that he studied human behaviour and neurological diseases. Possibly stress from bills? maybe his life was panning out exactly as he had hoped, not finding a career, not settled down yet, possibly.
Hopefully James Holmes will confess his thoughts to police, any explanation would be interesting to hear,
What causes a science scholar, top of his class, to break? Why a batman movie?
Could he have been trying to get a feeling of thrill? Holmes has never been in trouble with the law, not even a speeding ticket. If he wanted a thrill, why not go sky diving or rock climbing? Is it possible Holmes could have had a problem with the very thing he studied?
All we are left with is questions, that will soon hopefully be answered.