What's particularly annoying about a situation like that is that the homeowner often has a lot more incentive to do a good job than a so-called "trained and lic

What's particularly annoying about a situation like that is that the homeowner often has a lot more incentive to do a good job than a so-called "trained and licensed" professional does. A moderately competent and motivated homeowner will often do a much better job than an "skilled expert" who rushes to get the work done.