[ouid]

There are exactly two possible outcomes of advertising.

1. You spend no more money on products that are advertised to you, and advertisers don't consider your view meaningful, and won't pay for it.

2. Advertisers make extra money from you, either by getting you to buy a thing that you would not have otherwise bought, or by getting you to buy a version of a thing that you would not have otherwise bought, and will pay less than that extra expected revenue for your view.

that revenue comes from your pocket. If you are in the latter category, then whether or not advertising is positive depends on whether or not you believe that advertising causes your decision making process to be more or less rational.