I think you're discounting the utility of simple checks. Imagine you have weekly backups , but only for the past 26 weeks because of disk space. A file gets co

I think you're discounting the utility of simple checks. Imagine you have weekly backups , but only for the past 26 weeks because of disk space. A file gets corrupted, but you only view it a year afterwards. You effectively have no way of recovering it. Knowing something is wrong can be useful (though being able to fix it is even more useful).