Revisiting Resident Evil 2 - why it's so worthy of a remake

Why exactly has this storied survival horror managed to ape its own subject matter and exist so far beyond its natural life to the point where it's now getting a remake ? Let’s spare the gratuitous verbiage concerning the evils of modern game design and how Resident Evil 2 is a beacon of all that’s lost, and boil this PlayStation 1 hero down to two distinct molecules of importance. One: it has atmosphere