If one is going to assume a deity exists, then further assume sin exists, then why not go even further along the assumption road by assuming the deity has arranged things so that sins happen to be actions or behaviors that are not good for us as individuals and/or societies. Is it necessary to assume they are arbitrary or irrational? I mean, apart from assuming they are such out of the wrath of our egos?
I'm not assuming anything. I stated what I was taught as far as the nature of sin. Right or wrong, my conclusion that punishment for sin is irrational rage is based on scripture.
Isaiah 26:21
For behold, the Lord is coming out from his place to punish the inhabitants of the earth for their iniquity, and the earth will disclose the blood shed on it, and will no more cover its slain.
Ezekiel 25:17
I will execute great vengeance on them with wrathful rebukes. Then they will know that I am the Lord, when I lay my vengeance upon them.
It may be rather convenient to define god's will as what's good for us. However that does not stand up. To punish, kill, burn someone, for not doing what's in their own best interest? Surely this is counterproductive? Surely this is madness! It is also a rather simplistic view that 'what is best for us' is not in conflict with what is best for my brother, or my family.
While consideration of what is best may be a great guiding principle, to be condemned to god's wrath for failing to do what is best for oneself would seem a rather objectively final 'what's not best for anyone.'
Furthermore the scripture does not support the idea that god's will has anything to do with our wellbeing. Scripture as much as states it's about god's ego, and he chooses who will and will not follow his will.
Exodus 10:1
Then the Lord said to Moses, Go to Pharaoh, for I have hardened his heart and the hearts of his officials so that I may perform these signs of mine among them 2 that you may tell your children and grandchildren how I dealt harshly with the Egyptians and how I performed my signs among them, and that you may know that I am the Lord.
Exodus 10:9
The Lord had said to Moses, Pharaoh will refuse to listen to you
so that my wonders may be multiplied in Egypt. 10 Moses and Aaron performed all these wonders before Pharaoh, but the Lord hardened Pharaohs heart, and he would not let the Israelites go out of his country.