Bad plumbing and electric

I'm constantly surprised by how poorly electrical and plumbing projects are done by the average homeowner.  I'm no contractor, and I generally don't know how to do a lot of homeowner things.  But I know the correct way to hook up the hot and cold water supply lines for a faucet.  I know the correct orientation for a standard light switch should be "up = on".  I can tell by looking at an electrical outlet whether it's upside down or rightside up.  These honestly aren't difficult things to know.  It takes the same amount of time and energy to do it right or to do it wrong.  Some people apparently just enjoy doing things wrong.