I don't. I'm not "a video person". When they show up in searches I get aggravated. I'm a "words person". I process information through auditory means and pretty much reserve my "visual means" for helping me see where I'm going (or else anything else that I really need to see). I don't like "visual clutter", "get mean" when I try to figure out what's going on in comic strips, and get REAL mean if I ask someone something, and they start with the drawing of illustrations instead of answering in words. (lol) I may be the only one left in this world, but I like the dreaded "big, long, blocks of text".
BUT, I know that some people like videos (they're the visual learners of the world, I guess), so if someone wants to puts videos in his Hubs I imagine he'll get lots of people who are interested in watching them. To each his own, as they say. :)
Then again, I often put a music video at the end of my Hubs. I figure if they're at the end or small, and off to the side, they don't really bother anyone who doesn't want to watch them. Of course, again.... the auditory thing, music video. That's different from an instructional type of thing.