Well said Spinnerhead!
And while you're at it do you also dob in pilots who enter turbulence past the recommended Va? Or others who set recommended power settings without regard to engine instruments indicating overtemp? If you don't, perhaps you should consider it, because these things have the potential to cause as much damage as well.
The fact is that there are a lot of silly things done by pilots and even engineers (the spanner turning types) mostly out of ignorance.
Personally, I don't believe one should perform aero's in a non aerobatic aircraft either. However, I am sure we're both also mature enough to accept that it can be done quite safely by a competent individual.
I don't think that the hell and damnation approach is really the best way to stop people from doing it, however, I would also admit that some people should never be put in command of any machine more complicated than a tricycle.
Depends on the individual really.