What were the motives behind the Columbine School Shooting?

Question

What were the motives of the 2 gunmen, Eric Harris and Dylan Klebold, to kill the people at Columbine high school?

Answer 1

Sadly, we'll never really know from Harris or Klebold. Their parents to this day aren't talking either....so investigation of mishandling by them is out. Ah, but they have to live with their mistakes, now don't they?

What few high school shooters we manage to capture alive offer some ideas....but in all reality, motives are as different as fingerprints.