Many speedcubers hit a plateau after a number of years and get bored, true, but it's a deep subject. Every solve is different and there is endless opprotunity for optimization and improvisation. And the physical dexterity aspect just adds to the fun. It would get boring only if you never improved or learned anything new. Definitely more satisfying than Sudoku or Solitaire.

It's the perfect thing to do while you're watching videos or listening to podcasts.

I can't really watch anything or listen to a podcast at the same time that I'm coding. But there is still stuff I really want to watch. This week in startups and some Mixergy shows etc.

But only sitting there watching videos can be very boring, so it's good to have something to do with your hands.

Also. There are so many formulas, techniques, etc. You gradually gain a greater understanding of how the cube works, etc.

I recommend it. Great hobby. But don't be one of those losers that tries to impress a whole party by solving one, it's really lame to cubists.

A good friend of mine hangs out with the 7x7 cube champion of the United States. He plays with various different kinds of Rubik's cubes, and from what I gather cubing can also get rather addicting.

Beating the record (your own or other's) I guess. Canabalt is even more boring and repetitive, but still addictive.

I saw a guy solving a cube with only one hand, thus freeing the other hand to do the same thing, more or less.