As a copywriter you are placed in an adversarial position with your readers.
This happens whether you like it or not.
The relationship is adversarial because you are trying to get your reader to change in some way. Change their brand of toothpaste. Change their diet. Change the software they use. Change the coffee they drink. And so on.
It is our job as copywriters to drive a change in behavior. Or, if you are writing to existing customers, it’s our job to prevent change from happening.
Either way, there is an adversarial element to the relationship.
If you don’t think there is anything adversarial about trying to persuade someone to change a behavior, pause for a moment and think about the last time you tried to make your spouse or one of your kids change their behavior.