His intention was to become famous.
Isn't it ironic that the media delivers on his wishes, and we gobble it up like so many horror movie-goers.
I'd love to see there be some sort of rule that these mass killers are never publicized....not their faces, not their names, etc. Don't know how that would happen, or even if it could.
But I strongly feel that the media sensation created by these monsters make it more likely that additional monsters will rise for the same publicity.