my grandma thought it was a good idea to raise me on dateline and true crime podcasts instead of spongebob but what really got me into school shootings and columbine specifically was some girl i wanted to impress. she was a very stereotypical tumblr/twitter dylan klebold fangirl but she asked me if i knew about columbine, i said not really, she gushed about it and i made the choice to do a load of research about columbine just to have an excuse to talk to her more and we became really good friends. we aren't close anymore but it was that whole interaction that got me into it, and im pretty sure it was also the environmental factor of just growing up to true crime that has kept me into columbine and shootings in general.