It's timeless. There is always something that you haven't built or tried yet - so it's easy to come back to after a break. My creativity wouldn't be where it is today without spending thousands of hours in Minecraft.
I am not a painter.. but I am certainly an obsessive perfectionist. Then I decided .. what if I just painted two kitties on this old wall thing? and who cares if I make mistakes? Art is fun!! Art is free!! And then I loved how it turned out!!