Is writing brutal sadist stories a sign of psychologic problem?

I was amateur blog writer. I have been writing for 4 years some stories where a woman seduces and (who exposes her belly) kills a man who harassed her. Woman firstly was kicking the man in the groin, then was killing with gun or burning alive. And most people loved these.
Was writing such stories a sign of problem?
P. s. I was not a teenager.
Is writing brutal sadist stories a sign of psychologic problem?
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