Distilled water helps to remove waste minerals that the body is trying to get rid of (that would cause kidney stones). It is not possible for water to remove required minerals from cells. Distilling removes fluoride, pesticides, chemicals germs, chlorine, and it is more pure than rainwater.
PS) You should see and smell what is left behind in our water distiller. It would make you vomit ! It scares me to think that this goo went into our bodies before we got the distiller . . .