On one hand I regret the deep strategy games that existed in the 90s (civilization, star control, master of orion, etc...)
Do you mean you regret the time spent playing them?
On the other hand , when I play these games I can't help to notice that they really deserve a good helping of casualization, because when the player is glued to his screen for hours without any real opportunity to break the play session,
Civ Revolution is a casual version of that classic game, I've heard mixed things about it in that it seems fine for someone new to the genre on console, but if you have played any of the PC versions it seems very 'shallow' a play experience. And we have had the 'Save Game' feature nearly as long as gaming has exisited, so you can break your play session whenever you want.
..and when 2/3rd of the game is spent looking at the interface and waiting for an animation to finish, there is a problem.
True UI's used to often be quite awful, and it's one of the few area's where gaming has really come along in the last decade or so. It's quite amazing that many of the great classics of gaming got their reputations often despite the poor UI.
Luckily we have a great choice of games to play in the world and pretty much all tastes are catered for. It's just a little sad that the variety seems to be growing smaller, as a non FPS fan(I just played them all from the begining(3D Monster Maze)and find them boring now) my game buying is very limited these days. So I'm very happy when a new strat game comes out.