It would be fine if advertisements weren't intrusive and obnoxious. I don't want to start reading a page, then three sentences in have my whole screen jump, then a few more sentences have an overlay pop up, then have some inline text that looks like it's part of the article but is actually an ad, finally to accidently mouse over some text that pops up a video with sound. That's how I experience much of the internet without ad blocking, not to mention how much slower things load. I disable on sites I frequent that don't do that.