Are Re-releases the new future?

This summer I picked up a bundle containing the games Metro:  2033 and Metro:  Last Light, as well as all the DLC for Last Light.  They are both really great games and I would recommend them to anyone who enjoys shooters, stealth games, horror games, or post-apocalyptic games.  I was, however, surprised when both games were re-released as part of a new bundle.  2033 originally came out in 2010, so it's by no means an older game.  When I first played it I was impressed with the quality of details and graphics--especially for a game that was four years old.  So why the decision to offer a remastered version?  Is this going to become the standard in gaming?

To me this seems like another ploy to reach into our pockets for more cash.  It's not DLC, it's not a patch to improve a game already in place, but it is offering basically the same games all over again.  I won't be re-buying a game I already own, even with improvements.  The review I read for Metro Redux stated that some of the issues from the original game have been fixed--things like areas that were way too dark or enemy AI that would bring every guard from an area crashing down on you if a body was discovered in the wrong place.  The graphics have been improved (not quite as much on consoles as on the PC versions) for both games.  But is this really enough to tempt players into spending an additional $40?

I worry that this might become a new standard in gaming.  I would much rather have developers working to create new games rather than trying to make old games better.  But maybe I am in the minority with my opinion.  Would you be willing to re-purchase a game if it was offered in an improved format?  Personally, I would be more interested in classic game remakes as opposed to more modern re-releases.