It seems to me that there is a vast amount of land available with no-one to care for it, not a shortage of land at the present time. If a person can care for large acreage (which might mean returning it to a wild state) I think they can do that without worrying that somewhere someone doesn't have land. If people want to share land with other humans, I think that's great too, but I don't personally believe it should be mandatory.
At least that's how I feel about it today.
(Presently caring for 20 acres, which I share with one other human)