He disassembled the faucet and went to the garage for a washer. While he was away, his kids turned the water back on. A stream of water hit the ceiling and flooded the kitchen in seconds. When you assume you can do the job more inexpensively, you are not assigning any value to your own time. Only you can decide if the DIY project is more important than spending your time on something else, such as entertaining the kids while the plumber repairs the faucet.
Homes don t come with an instruction book.