What percentage of the population do you honestly think want to install a diswasher? Is that laziness or apathy or more possibly just a lack of interest? Maybe they'd prefer to haveit done by someone who has done this kindof operation before? Maybe the don't have the confidence to do i? Maybe they messed up something similar previously and it cost them a lot of time, stress and ultimately more money than it wuld have if they had hired someone knowledgeable in the first place?  How many surgeons do you think rush home after a day saving lives and say "honey, I just cannot wait to install that dishwasher tonight."? If for example, you make $500 or more per hour, do you think you should spend your spare time installing dishwashers? Sure, go ahead if it's a hobby or you enjoy that sort of thing but if you don't, maybe you should consider hiring someone for $40 an hour to do it and take the wife out to dinner? Is it better to be a "jack of all trades"  or an expert at one? Just a thought