Well i think we're all conscious of the announced death of warcraft, which started from blizzard themselves when they came up with SC2 and diablo 3, and started to ban all kinds of people for various reasons outta bnet, removing the bots and such things.
However W3 is like Total Annihilation, a massive shiny trophy on the scene of pc games, with so much quality and editing power that one could play it over and over without getting bored. That's why i think there will alsways be people playing it.
Then again, the domination of DotA (just not to say "monopole") and the acceleration of the game industry could justify moving on to other games, but i would need 2 things before i do that:
-A game with more editing possibilities than W3 (that aint easy at all, i have yet to see that)
-A new pc cuz my 3 year old mid-class RAM-less laptop can't handle most new games. I have Black&White and i can't play it past mission 1 lol.
So for now, CC (along with all my maps) stays in Warcraft 3.