You would think that, but it's actually got me out of several jams. Because I do it weekly I tend to catch problems pretty early and I am able to fix them before they get worse. In fact, one time I fucked my 3DS NAND, but because I literally backed up a few days before hand, I was able to restore a NAND that was only few days old, verses a few weeks to months old. I do delete NAND backups every couple of weeks to save on space, but I keep at least a month's worth of backups.It's good you do backups, but doesn't all that every Thursday seem a bit excessive?