I suffer from the same frustrations as you, at times I just cannot comprehend how someone can genuinely believe that they are a life threatening emergency and justify the resources they are using up. The best way I have come up to with dealing with it, and I'm pretty easy going, not much winds me up which helps, but you still get paid the same rate if you are doing a job where you don't even need to crack open an O2 mask or a proper working job which every single piece of kit you've got (including the ceiling of the ambo) gets covered in some sort of bodily fluid.