yes, yes.
there are many studies about it.
you just have to see the increase in plastic surgeries: boobs, "designer vagina", teenagers taking viagra and so on.
a number of psychologists claim to be treating people with porn addictions (in extreme cases, they'll even quit their jobs), people who prefer masturbation over real sex (and of course their partners aren't happy about it) and people who cannot have sex unless they are watching porn.
i saw an article the other day in which a good number of teenagers nowadays claim their first sexual experiences are "disappointing" compared to what they imagined because of porn.
it's a bit of a disaster.
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