Websites are expensive and other than charging users money, ads are an easy way to generate revenue. I like using free services and I'd like to support the owner. As such, I don't use AdBlock. However, YouTube forced me to. Back when YouTube used a small ad in the top-right, it was fine. Banner overlays were a bit more annoying, but still tolerable. Pre-rolls? No way, they stop me from getting to the content I want.…
I often switched to embed. (youtube.com/watch?v=x89eyhj => youtube.com/embed/x89eyhj) I do it because I might want to watch a video full screen in one monitor and continue to work on another. Embed automatically takes up the full window. An added side effect is that the pre-roll ads disappear. The banner ads are still there.
I just automated the downloading and playing of Youtube videos from the command line. Here's the script that'll do it: https://gist.github.com/lelandbatey/7594106