An enclosed run on the ground is much different than a balcony ~100' from the ground.Millions of chickens live in a similar way, never seeing grass, and are quite happy. I don't know how many members BYC has in total but a percentage raise them in enclosed runs, which could be, if the sizes are appropriate, equivalent to an enclosed balcony. Those runs don't have fresh grass, some are sand. It's not bad just because it's different