I don't know about anyone else but my motivation goes more along the lines of "I'd better load enough fuel or I'll crash" rather than "I'd better load enough fuel or I'll be prosecuted".
Precisely. I'm not sure what prosecution achieves, apart from revenge. And since pilots DO make fuel miscalculations, whether it's forgiveable or not, reliable gauges or insisence on ONE unit of measurement rather than THREE would be a useful change.