There's nothing noble, romantic or exciting about a killer that walks into rooms full of unarmed sitting ducks; blows them all away indiscriminately with no reason, provocation or motive; and then turns the gun on himself.
You can't compared the actions of iconic outlaws and criminals to the garbage we see today in the actions of Adam Lanza, Anders Behring Breivik, James Holmes, Jared Loughner or Seung-Hui Cho.
Society doesn't glorify rampage killers. Take a look at the list:
http://en.wikipedia.org/wiki/List_of_rampage_killers
No one there has been romanticized and that list goes back more than 100 years.