The way I think is best to illustrate this is to give a little comparison.  
 
Is it evil to have a million dollars? No..Of Course Not. Now is it evil to have a million dollars that you stole from a Bank? Yeah. 
 
It's not that Satan was trying to become like the Gods, but his motivation behind it. God revealed to us a little bit more regarding this. (Moses4:1-4) And I, the Lord God, spake unto Moses, saying: That Satan, whom thou hast commanded in the name of mine Only Begotten, is the same which was from the beginning, and he came before me, saying—Behold, here am I, send me, I will be thy son, and I will redeem all mankind, that one soul shall not be lost, and surely I will do it; wherefore give me thine honor.  
2 But, behold, my Beloved Son, which was my Beloved and Chosen from the beginning, said unto me—Father, thy will be done, and the glory be thine forever.  
3 Wherefore, because that Satan rebelled against me, and sought to destroy the agency of man, which I, the Lord God, had given him, and also, that I should give unto him mine own power; by the power of mine Only Begotten, I caused that he should be cast down;  
4 And he became Satan, yea, even the devil, the father of all lies, to deceive and to blind men, and to lead them captive at his will, even as many as would not hearken unto my voice.  
 
Satan's plan to redeem mankind seemed like it was along the same lines as God's plan for his children, except for a few things: 
 
1. Satan wanted the Glory. 
2. Satan wanted to "destroy the agency of man", or to force us to heaven, which obviously would not accomplish our purpose here on Earth. 
 
Satan rebelled against God and his plan. That's why he was thrust out of heaven. 
 
We are also promised that if we keep the commandments of God, and suffer with Christ, we will be "joint heirs with Christ" (Romans 8:17). What is Christ the Heir to? All that God hath. What does God have? Everything. All power, all knowledge, everything. Now will we gain that all at once? No I don't think so. I think it will be a slow process that we will gain knowledge line upon line, precept on precept. And as we gain that knowldege, along with it comes power. 
 
So if God has promised us everything that he hath, then why wouldn't we attain a status that was a-kin to Godhead? 
 
I guess we are just taking it literally.