There are many things even a very handy person can not do, rather it be from a legal stand point ( asbestos removal for example)or can't do from logicstics stand point( anything that requires tools that are $$$$, jacking a house comes to mind.)
The part about not trusting contractors in general, is exactly what I'm talking about, I have to fight that every single day.
Its the reason why I will not hire people that , drink(aka drunks, not the guy that has a beer or two at a BBQ), smoke or do drugs. Even my back ground checks go well beyond what is legally needed to work with children in this state.
Its also the reason why all my employees must be clean shaven, tuck in thier shirts, have a collered shirt, no tats( had a prob with even having them covered). if you don't like it, don't let the door hit you on the way out.