Ads encourage people to buy stuff they probably don’t need. They incentivize clickbait and tracking. And most online advertising is probably a waste of money anyways. [1]
How then, you might ask, will content and services be paid for?
Sponsorships are not a solution for the same reasons.
The Brave browser is not a solution. [2]
I think the solution is to pay for everything with donations and crowdfunding. This model incentivizes doing what’s beat for the end-user. Great examples of this include Wikipedia and the Internet Archive.
If ads were banned, many websites would die, and I would be ok with that. Only the ones that are the best for users would survive.
[1] https://thecorrespondent.com/100/the-new-dot-com-bubble-is-h...