If ads were merely about being informative, they would be boring. But ads want to manipulate, so they have to be flashy and appeal to your emotions.
They pollute your mental headspace, and have no place in a healthy society.
Let's ban billboards. And then let's follow that up with a general purpose ban on paid advertisement.
And that's exactly the point. I don't want products and services pushed at me. I don't want companies telling me that I need what they offer, even if I've never really thought about it before.
And remember, this is just a ban on paid advertising. This doesn't mean you can't put up a website to market your product. You can sell through Amazon or whatever, and appear in search results (results that aren't affected by anyone paying for ad space or better rankings). You just can't pay others to advertise it for you.