The logic I've heard about this is that a 1911, when "cocked and locked," is far less (inherently) safe than a modern striker gun with all its internal passive safety mechanisms. Therefore the grip safety adds a measure of safety to a cocked 1911, but is superfluous on a striker gun.
Personally I like the grip safety on my XD. It renders the gun incapable of firing if the trigger were to be accidentally depressed when holstering, etc.
Personally I like the grip safety on my XD. It renders the gun incapable of firing if the trigger were to be accidentally depressed when holstering, etc.