Do we care? I mean that seriously.
Half-life was innovative and a ton of fun over a decade ago. Half-Life 2 was a last hurrah for old school shooters, but replaying it shows how linear and basic it really was. The episodes were more frustration than game play and the story is going the same way as Lost and BSG; the whole "let's keep everybody guessing and confused, even if it means we can't wrap it up neatly ourselves" strategy. Sure, it's fun for awhile, but look how it always turns out.
We look back on those games fondly, but they weren't that great, that well written, or even that good of examples of the things we remember them for.