Couldn't we just all be awake to our true nature if God is all powerful?
Everyone is awake already, but that awakenness is obscured by maya. It is the same if you see a rope and believe it to be a snake. When you look at it more closely, you see it is not a snake. That seeing does not transform the snake into a rope, it was a rope all along. It is said to be like this. The ego seems to exist, just as a rope seems to exist as a snake. The snake doesn't exist only the rope does; in the same way, the ego does not really exist, it only seems to. This seeming to exist has been referred to as maya, or even lila. In this maya, God appears to be an entity separate and alien to you. In fact, God is not different from you, but is your true nature. Through your dualistic perspective, you think God is external to you, and wonder about what his motives are. It is if the person looking at the rope is wondering why that snake is sitting there, whether he is about to bite, etc.
Why would we come here to play these roles??? And why are we so drawn to these philosophies or masters, when our thoughts and forms will one day return to nothing...?
Through suffering and being miserable people long for happiness. They seek happiness, sometimes in these philosophies and masters. Since happiness is your real nature, you can't help but seek it, and the tendency is to seek it in external objects and concepts. That's why people go to a master who will tell them to look within themselves and stop seeking it outwardly, or in a dualistic way through objectifying concepts.