If anybody needs proof of this, install an adblocker and observe as your life does not fall apart despite your now limited exposure to advertising.
That is naive thinking. Advertising exists to reduce friction in the market. I'm a lot more likely to buy something if I know it exists. I won't go to the movies unless I've seen a trailer, for instance.
Maybe installing an adblocker doesn't super negatively impact your life but if we completely stop advertising as a practice then spending would slow and all of our lives would be worse off.
Far from negatively impacting your life at all, blocking ads significantly improves it. Try it out yourself. I think you'll find that through various interactions with the general public, people who aren't paid to lie about products or services, you still find out about movies worth watching.
E.g. would we better off if we couldn't advertise that free software alternatives exist?