IMHO. Because people "see" the "effects" of good or bad plumbing more than they "see" the "effects" of good or bad electrical work.
People will "raise cain" about a leaky faucet, but if a receptacle is not working, they'll just get an extension cord. Man, I hate to make the above statement, but I honestly feel like it is true.
Antiplumbologically Yours,
Doc
