I watch YouTube to watch a video or two I want to watch. that's it. Frankly, when someone sends me a video to watch, I resent it, because I hate spending 5 minutes of my life watching something that probably won't be funny.
Some nights I'll pull up YT on the TV and play a Wendover productions vid, or an AvE vid, or a car video or two, and that's it. I don't ever feel sucked in or addicted to it. If anything, I often want to watch something but can't find anything interesting to watch; nothing sounds that compelling, or I get 3 minutes in and am bored so I try to find something else.
Am I unique in that way? I've also never gotten into video games, they just don't hold any appeal or hold my attention. That's not to say I haven't spend 12 hours gaming at a LAN party once in a blue moon (actually far less frequently, maybe 4 or 5 times in my life).. but I don't get sucked in in the same way I get sucked into other internet distractions. I can go down HN rabbitholes or keep refreshing FB or some news site hoping to find something interesting, but YT doesn't do it for me.