A parent's job is not merely to keep one's children safe, but to also prepare them for life without parents. Watching them all the time so very closely is not a good preparation for adult life. But being a good parent these days (in the U.S.) can get you thrown in jail and have your children taken away from you. We truly live in a madhouse.
"A wise man ... proportions his belief to the evidence."
— David Hume, An Enquiry Concerning Human Understanding, Section X, Part I.