There are remakes I like for example Resident Evil (GameCube).
But these are basically completely new games which just recycle the story etc. of the original.
Then there are the remakes I dislike. I consider them mostly to be re-releases of the same game, with minor changes, to a new platform. An example would be the laughable HD releases of various games and another example would be re-releases of (mostly) SNES games to portable devices.
However in general I despise remakes.
A cheap re-release is just there to cash into peoples nostalgia and probably long past glory and a real remake takes money and manpower away from a new game/IP that could be developed instead.
If I could choose one game to get the Resident Evil make over it probably would be Xenogears: