Honestly, I don't care about it that much anymore. Valve constantly throws out "clues" and acknowledges the fact that people really want it, but continue to tease us with Half-Life 3 jokes.
It has been such a long wait, that by the time it does (if ever) come out, I won't be that hyped for it anymore. It will just be another game, and probably pick it up when the price goes down a bit.