I think maybe about 3 or 4 times.. ever, mostly back in the Google ad-words days.
In the earlier days of the internet the ads weren't as annoying, I don't know about other people but I found I was subconsciously ignoring them 99% of the time.
Then the ads got annoying with animation, then they got just insane with ads plastered in every spare space, then website design changed to be around fitting in more and bigger ads. Somewhere along that progression adblocking was needed as the giant animated ads were highly distracting and annoying.
Then devices such as phones, tablets, internet connected TVs etc become common, blocking ads on those became a problem.. Queue network wide ad blocking.
If the advertisers kept their ads a little reasonable, then the nuclear approach of blocking all ads at the network level wouldn't be needed. They took it too far, and lost our eyeballs.. on every device, and most of the tracking and profiling ability with it.
Personally I've never minded broadcast TV advertising, usually that affords a short timed break to do something else. About the only time it gets on my nerves are the channels that run excessive amounts of ads during movies - a few here and there are ok, or the last 20-15 minutes of the hour on news channels where it seems like 75% of that time is used for ads.
YouTube figured out how to truly make ads the most annoying thing in the world by inserting them into the video stream. Thats fine, but the number of ads they put in is nuts, so YouTube is avoided now, gone are the days of mindlessly browsing the site for a while, now it's for something specific and that's it. Anyhow I bet the beancounters Google hired a few years ago are laughing all the way to the bank with how much monetizing they've managed to squeeze out of it.