Can I ask how this is different than the current efforts people do in fantasizing about different situations in the real world? In the fan world alone there is art, fan fiction, costuming and porn parody. And that's just the tip of the iceberg. How an "enlightened" people would handle it is of course up for debate. Personally, I think that it is treated like video games, where these creations are limited by the capability of the computer. Hopefully, as they discover things with Moriarty, and The Doctor, etc. More limits would be placed on the capacity of the holograms for recreational use. One would hope they could be programed to be treated as NPCs in a video game, having no more autonomy than the character wandering around in Assassins' Creed.