Another "Troubled Youth"

"Parkland high school shooting: At least 14 'victims,' some dead, suspect in custody, Florida sheriff says." Here we go again! Already I have heard this murderer referred to as a "troubled youth", and I'm sure once again we will have to hear all about his life story nonstop on TV. While he gets the attention and glory he seeks, his victims lie dead.  As I always wonder after killing sprees like this, if he was so troubled, why didn't he just kill himself?