Historically, one of the reasons not to create one massive blob with all your stuff in it is containment of the blast radius of any kind of failure. The filesys

Historically, one of the reasons not to create one massive blob with all your stuff in it is containment of the blast radius of any kind of failure. The filesystem at least has (probably) reasonable consistency checking and repair tools, and you're likely to see integrity problems discovered at a file level, rather than experience catastrophic losses.