I definately wouldn't. I'll pay gladly for a blockbuster movie, or even smaller efforts, but it simply isn't worthwhile for the majority of youtube content. True, people could perhaps make bigger things if we paid them directly to watch, but kickstarter's already helping towards that kind of stuff.
I'd be massively sad to see it go, and yes, I'd have a lot less to do with my time without it, but I flat out refuse to pay for the kind of content on youtube.