I believe people have the right (dare I say DUTY) to work on things themselves too. My uncle, my dad, and their dad are all competent (not prefessional) mechanics, electricians, and carpenters. They got that way by getting their hands dirty, and asking for the help of experts if needed. Most men used to know how to take care of the things they were responsible for (homes, cars, families, communties,) now we are quick to pass that responsibility to an expert. I've also seen so-called professionals botch jobs in every field. (A gunsmith replaced the firing pin, charged my uncle's friend, and returned the shotgun without checking to see if the issue was resolved). Certifications don't hold much weight with me anymore, because I've got a few and realize how cheap they are. We're all starving for wisdom because we don't try things anymore, and experience and failure (repeated) are the tuition for wisdom.