Ads are a brute force approach to the challenge of having useful information (company X offers Y) reach their target (people who needs Y presently or in the future).

If you say no ads should exist, then what alternatives would you have for that challenge?

Humanity lived without ads for thousands of years, I think we can do without.

That time coincided with humanity living near the lowest standards of life.

I like adverts. They inform me about good things I could buy that I otherwise wouldn't have known about.

You seem to use the word "good" very liberally.

That's not the point of ads.