>no reason to assume that a behavior that activates the reward system is categorically less harmful than a molecule that activates it directly.
There are mountains of papers, books and all sorts of evidence that drugs that directly act as agonists for populations of dopaminergic neurons the VTA that mediate incentive salience (methamphetamine, cocaine, etc) are incredibly addictive (wanting, not liking, not reward. reward prediction). This is very different than an experience that is naturally rewarding like sex (liking, and maybe wanting later remembering the liking). Anticipation of sex may activate VTA dopaminergic populations but the reward of sexual activity itself does not. And certainly not things like viewing audio-visual media on screens.
I use medical to emphasize that when you try to reason about these things without fine grained understanding you come to false general conclusions.
I do agree that with drugs that just activate reward directly (like opioids with glutamergic populations in the shell of the nucleus accumbens) can rapidly become addictive. But these too are different than expriences that happen to activate reward through sensation. For example, sexual activity is a behavior that activates reward yet very few people become addicted to it.
There are mountains of papers, books and all sorts of evidence that drugs that directly act as agonists for populations of dopaminergic neurons the VTA that mediate incentive salience (methamphetamine, cocaine, etc) are incredibly addictive (wanting, not liking, not reward. reward prediction). This is very different than an experience that is naturally rewarding like sex (liking, and maybe wanting later remembering the liking). Anticipation of sex may activate VTA dopaminergic populations but the reward of sexual activity itself does not. And certainly not things like viewing audio-visual media on screens.
I use medical to emphasize that when you try to reason about these things without fine grained understanding you come to false general conclusions.
I do agree that with drugs that just activate reward directly (like opioids with glutamergic populations in the shell of the nucleus accumbens) can rapidly become addictive. But these too are different than expriences that happen to activate reward through sensation. For example, sexual activity is a behavior that activates reward yet very few people become addicted to it.