When AI approximates Machine Intelligence, then many online and computer-run RPGs will move towards actual RPG activity. Nonetheless, that will not replace the experience of 'being there,' any more than seeing a theatrical motion picture can replace the stage play.
Gary GygaxYou are not entering this world in the usual manner, for you are setting forth to be a Dungeon Master. Certainly there are stout fighters, mighty magic-users, wily thieves, and courageous clerics who will make their mark in the magical lands of D&D adventure. You however, are above even the greatest of these, for as DM you are to become the Shaper of the Cosmos. It is you who will give form and content to the all the universe. You will breathe life into the stillness, giving meaning and purpose to all the actions which are to follow.
Gary GygaxI foresee online gaming changing when there are good audio-visual links connecting the participants, thus approximating play in a face-to-face group.
Gary GygaxOf course as children, we all, in all cultures and societies, learn behavior from observation, imitation, and encouragement of various kinds. So by the suggestion made, we all 'pretend' most of the time.
Gary Gygax