Because most ads on the web are shit. And there are far too many of them.
The other day I was watching Seinfeld when I found myself craving a Vandelay Industries t-shirt.
So I did a search on Google. Then looked at a couple.
Today I turned off my ad-blocker to view a piece of paywalled content.
And since doing so I am being bombarded with ads for Vandelay Industries t-shirts.
So remind me again why more and more people are installing ad-blockers on their computers?