It may seem unfair if you believe that you are a better judge than God.
The alternative is to believe that (a) God exists as a real entity and (b) communicates [his] judgments clearly, coherently and completely and (c) will act in reality to enforce [his] judgments (since if [he] does not, the judgments are irrelevant).
But not even one of those is true.
And even if it were true, the individual would still have to take responsibility for his or her own moral decisions, and not just try to ape what he or she understood to be The Instructions, no? According to the bible, God ordains a whole lot of things I find morally repulsive in the extreme, like invasive war, massacre of surrendered populations, mass rape, human sacrifice, murderous religious discrimination, women as property, slavery as normal, and even the entrenched privileges of the priestly caste.
Nor have I ever understood what the crucifixion of Jesus accomplished that God couldn't have accomplished without bloodshed, just by one snap of those omnipotent fingers ─ why yet more gratuitous cruelty and bloodshed?
The Promised Land is an actual physical geographical area (today roughly equated with the land of Israel). The story is that Moses died before the wandering Jews reached it.
But as you know, there are major differences between the boundaries of contemporary Israel and the boundaries variously described in Numbers 34 (where particular subdivisions among the tribes are prescribed) and Deuteronomy 34.
And God had already promised much more than that in Genesis 15:18-21 ─
18 On that day the LORD made a covenant with Abram, saying, "To your descendants I give this land, from the river of Egypt to the great river, the river Euphrates, 19 the land of the Kenites, the Kenizzites, the Kadmonites, 20 the Hittites, the Perizzites, the Rephaim, 21 the Amorites, the Canaanites, the Girgash ites and the Jebusites."
Odd to reflect that the land from the Nile to the Euphrates, with just the odd blip here and there, is Arab territory, no?