A friend (who does not use an ad blocker) showed me something on a website a few weeks ago and I was shocked by the invasiveness and aggressive nature of the ad

A friend (who does not use an ad blocker) showed me something on a website a few weeks ago and I was shocked by the invasiveness and aggressive nature of the ads. I asked him how he was able to use the web like this and he said it was annoying and that he was interrupted a lot, but he had sort of gotten use to it. There's no way I would use a browser without an ad blocker. Doing so is counter-productive and also a major security risk.