What I find confusing is that I have read that each was already described to have been an ordinary human being, and is then conceived of as the Supreme God under different names and personalities. How are Hindus able to keep track of all of this complexity?! With us it's so simple and easy: one supreme God to serve, follow his laws, and that's it.
Avataras are both, human and divine at the same time. It poses no problem for us because either we are born into it or have read and understood this. You have not understood it till now. Follow what you want to follow, and also let us follow what we want to follow. The problem comes when anyone wants to be one-up. Keep your simple but oppressive system to yourself, let us follow our complicated but non-fettering system. We would feel so asphyxiated in your system.
"I am Yahweh your God, who brought you up out of the land of Egypt, out of the house of bondage. You shall have no other gods before me. You shall not make for yourselves an idol, nor any image of anything that is in the heavens above, or that is in the earth beneath, or that is in the water under the earth: you shall not bow yourself down to them, nor serve them, for I, Yahweh your God, am a jealous God, visiting the iniquity of the fathers on the children, on the third and on the fourth generation of those who hate me, and showing loving kindness to thousands of those who love me and keep my commandments."
Shucks, I am not subservient to any Lord or Master. I am my own master. Yahweh brought you out from one bondage to another.