Give Pollock crap all you want, but the guy popularized one of the most fun painting techniques ever, regardless of how you feel about his stuff.

Seriously, splatter painting is really fun to do even if there's no real reason to it, and if anything, who says art has to have a reason behind it? Just straight-up having a play around throwing paint on something (in fact, there are entire places dedicated to that exact thing cropping up over the last few years) is as valid as drawing a scene out with an actual story behind it.