Washing machine hoses are supposedly notorious for springing a leak. I don’t have the same concern with other water supplies. I like my floors and don’t want to risk flooding my house if a washing machine hose breaks.
When I turned off the house water before traveling in winter, it was because we found the house was not built to tolerate the below freezing temperatures that would occur at least a few times each winter, even though it was in the southeast US. A frozen pipe in the attic would wreak havoc if it burst. We were lucky that the one time we didn’t take precautions, the frozen section in the attic thawed without bursting the pipe. We got heat circulating in the attic pretty quickly. This was a suburban house, so water for horses wasn’t a consideration.
I’ve never worried about turning off the house water when living in Colorado. Houses here are built and insulated much better. Even my 45 year old horse property never had a frozen pipe, even in sub zero temperatures.
But a washing machine hose can break in any climate. If you think it’s silly, then don’t shut the water off.
Rebecca