Given the long times to perform actions quite often it's not abnormal to be doing something else as well (watching a show, reading emails, etc.)
Food allowing for stamina replenishment forces you to eat it, so starving to death isn't required to give food a value. And it means that if I get sucked into an email that takes longer to handle, or get really into a show. My player is dead when I return which doesn't benefit the game at all, it's just annoying.
If having a player who is afk laying down is the goal, that could just be achieved by having them lay down as if sleeping after a certain time period, which seems to be the common approach in most games.
But maybe it's just my playstyle. If anyone has found that starvation has a positive impact on how they play the game I would love to hear about it.