Everything starts as a thought.
You have the most amazing grasp of the obvious.
Whenever you lust after other people, you may get horny and watch porn.
Oh, no. What a fucking tragedy.
After a while, you become addicted.
You make this claim as if it is A then B will always lead to C. Reality does not work that way. Addiction to pornography is, In my opinion, more often an excuse than an actual condition.
Then later on, you're a pedophile.
Care to explain how watching porn makes a person into a pedophile? Seeng as all avaiible studies and the testamonies of pedophiles themselves indicate that they have alays been attracted to children, not as a result of watching porn, which by the way features adults, not children.
Kind of the same with killing and stuff.
So thinking about killing someone will invariably lead to you becomng a murderer, then a serial killer, and then a pedophile, right? Thoughts, no matter how "evil" you perceive them, do not translate into actions just because you think them.