The flat earth is supported on the back of four elephants, who in turn are standing on a giant cosmic turtle that is flying through space.
It is speculated the turtle is looking for a partner. When that happy day happens, that will be the big bang.
It is of critical importance, therefor, to know the sex of the giant turtle.
3:2:1 - Cattle not pets - If your data is backed up in multiple sites, the death of one site shouldn’t overwhelm you, and give you time to recover.
If your primary site drives are getting above their designed lifetime, rotate them out, sure - but they could be used as part of the backup architecture else where (like a live offsite sync location with enough tolerance for 2 disk failures to account for the age).
3 copies of your data; 2 types of media; 1 copy offsite.