Insulting someone with the term "casual" is actually making fun of yourself for barely having a life outside of Destiny.
Hardcore gamers are generally for the most part socially retarded and lacking in friends. Well, the ones that call themselves hardcore or dedicated and call others casuals are anyways.
keep on insulting yourselves boys and girls! You're doing a fantastic job.
BUMPS for casuals.
[spoiler]I'm a casual (ish)[/spoiler]
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I'd say it's an insult too yourself to be so upset by mere words