I'm 16 and my mom won't let me play Call of Duty Black Ops III?

She thinks it'll make me want to kill people in real life I got so pissed when she said that but I wasn't rude to her or anything. She insists that I play Lego and won't buy me b03. Any advice?
Update: I know someone's gonna be that "smart" guy who's like "Get a job". If I could I would.
Update 2: Thank you for all the responses, I never thought this question would get this much attention.
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