Well, in my case, as and experimentalist, it's simply that I don't consider thinking about subject matter that I love and playing with expensive toys that I could never afford on my own as "work." And as long as I produce publishable results every so often, no one bothers me. Maybe when I get my own lab, or otherwise rise through the ranks, this will change, but right now, I'm high enough level to not be belabored with the mundane, but low enough that I can go unnoticed by the higher-ups. It's a sweet deal... although the pay is certainly better higher up.