Why do hardcore gamers hate casuals so much?

Current Events

I also find it funny how the gatekeeping gamers like to say "casuals" as a noun. It really feels like they're trying to use it as a slur sometimes. That, and they don't want to say "casual gamers" because they don't consider them "real gamers."
"It's Dyin' time."
Captain Bruce Diehard, Die Hard