I don't get it. If GSC couldn't be bothered to at least render a far off view of the rest of Chernobyl from certain points / not have areas where the land just ends like they managed in the Rostok transition point, why the hell didn't they cut this off as well?
Well I can only guess that:
1. They tried to - they put a bouncer in the doorway, and made the zone a no-weapon zone. They just didn't count on players trying their darndest to get in there :)
2. The building is a physical 3D object, ie they already MADE the rooms. You can't "cut off" an object without re-doing it all... so they got lazy and did #1 above.
maybe they would act stuff like more duty or political ppl inside that area for meetings and stuff makes the game more mysterious etc.: You are walking down the streets of BAR listening to the sad woman on the megaphone singing then suddenly a duty messenger runs to u and asks you to go to the 100 gap bar and u have to go in to the room. Your first political/Government related mission :P tada for all you loyalists and patriots to ur country ur wish has been fulfilled