[someotheridiot]

The sorting can be quite relaxing for some people (ie me). Kind of like a background task you can perform while watching a movie and calm your mind of things.

[enriquto]

Yes! If the OP poured me a glass of scotch I'd very happily sort his 10.000 brick collection between sips.

For a much larger collection (as the guy who got a bag of his own weight), some sort of automatic sorting would start to be envisageable.