Not everyone who watches porn is an addict who constantly watches it and can't go a day without it. It's like saying that anyone who has a drink with dinner is a raging alcoholic. Don't take away booze because some people can't control their addictions, and don't take away porn because some people can't control their addictions.
Not everyone who owns a hand gun is a homicidal maniac who constantly shoots people and can't go a day without killing some one. It's like saying that anyone who has a so-called assault rifle is a homicidal maniac. Don't take away guns because some people can't control their psychotic behavior, and don't take away so-called assault rifles because some people can't follow the laws of the land and become criminals.