I know lots of advertisers think they can't live without it --- because promoters have told them so.
Advertising is a type of "content", and people like content-, but how one can say it's better than the content recommended by people not paid to promote it?
One, the more people are used to get their content via ads (instead of share by friends), the least they'll be incentivize to share good content.
Two, platforms that are paid by advertisers are certainly incentivize to have the best content in ads vs non ads. Why feature a video in your feed but they can be paid to push the same content from an advertiser?
There are so many reasons why "some ads are great" says nothing about ads being a good thing.