I don't think power is ever a bad thing, unless it is abused. I think this is where free-will comes in. Once their eyes were opened, then they had a choice, a choice they had all along but were never aware of until eating the forbidden fruit. Now that their eyes were opened, they could do good or bad, free will. As parents we give our children choices...sometimes the choices are good, sometimes bad. We teach them there are consequences to their actions wther good or bad, just as , God was giving Adam and Eve the consequence for their actions. By gaining knowledge they now had power. Power to do good deeds, or power to do bad deeds.....example...Cain and Abel.
Am I making sense here?...lol I think I just confused my self