literally the only game I intend to buy on release day at full price from now until the the day I can't hold a mouse/game controller would be either Portal or half life or even better, "Half Port Life" ;)
I rarely have time to play any of the games in my steam library (and there are many, most of with have not been played once - gee thanks, humble bundle!) but just as when portal 2 came out, I will make time for the next Black Mesa/Aperture Labs game.
but it seems, Valve no longer want my money (unless it's tied to VR it would seem...)