I am not convinced this was a suicide attempt.

If you watch the IR surveillance video from DIA, the guy is casually walking across the runway...no sense of urgency...not running towards the plane. In my opinion, to do so at night and hit either the engine or the landing gear, he would have to have an extraordinary sense of timing and depth perception. Granted, I have zero idea, whatsoever, what the cone of danger is for sucking in a human on that engine at takeoff power. I wonder if he (she) was just stoned out of his mind and wandering around the airport or was a thrill-seeker who wanted to see how close he could get to an airplane rolling for takeoff (kind of like playing chicken with a freight train, which, believe it or not, was actually a thing where I grew up).