[short_sells_poo]

Everything you describe is an ugly hack that ruins immersion and suspense of disbelief. Are you proposing the AI shouldn't be able to use doors? What if an NPC wants to open a door at the same time as a player? Are you suggesting that gamedevs should add an entire myriad of these exceptions to all the interactive aspects of the game? That's wholly infeasible. Players can and will break sort of game design in wild abandon.

You are trying to build a believable world, or at least one with as few uncanny valleys as possible.

Doors are hard, as is everything interactive. That doesn't mean people shouldn't try to make these things better. And at the same time, we need to acknowledge that doing this is bloody hard.