I don't have an issue with seeing legit ads.
My issue is the shady advertising companies some websites partner with (** COUGH - sounds familiar for some reason - COUGH **) that hijack your browser. For example, I quit reading USA Today because most of the time I have to disable my adblocker to see the article. A few weeks back they had an article on Ohio State football, so I disabled my adblocker to read it.
And guess what happened? I got a redirect from one their crappy ad partners that said my files were locked and to call a phone number to get them unlocked. I couldn't even close the browser the normal way, I had to CTRL-ALT-DEL to kill Chrome altogether to get rid of it.
If they find a way to get rid of that crap, I'll stop blocking all their ads.