I have always liked creating new things, and having been in theater for as long as I have, I find that there are some limitations to the things you can do onstage, especially with creating things that can be done right away. While I don't make videos with scripted material as much as I'd like (most of my content is at least somewhat improvised), I'm building skills toward doing that at some point in the near future.
Also, I like connecting with people on a certain level, and videos certainly allow you to do that.