I'm OCD about a lot of things and my multi drawer Craftsman toolbox is certainly among them. I learned the hard way an 'open door' policy is not a good thing here.
Unlike some of the brethren on here, I do not make a living with my goodly assortment of wrenches, sockets, and screwdrivers. But formerly I took the Craftsman in to work, as someone's forever needing to assemble something or tighten something. Fact of life: If folks return stuff (big IF), people are not going to put it back like they found it - see OCD above.
That said, I'm glad to say there's a man or two in my world with whom I trust my very life. They could ask to borrow my tool box and it's theirs, no question (if they can lift it..... sucker's heavy!) I can assume everything'll come back with no less care than they give their own tools.
So it's about more than 3/8 drive sockets or chuck keys: my tools are a metaphor for a bond and trust I have for select men in my life. I thank God for them. I covet that kind of enrichment for every man.