inception(part 3)

and there is something about the ending that makes me wonder so much,i could only think of two alternatives:
1. he's still dreaming ,this can be seen from the part where he reached home and his children ran to him,they looked exactly like the projection of his subconscious,they hadn't grown,the clothes they wear didn't change at all,this creeps me out a bit,but it can be possible also ,if he only got away for months (as things moved fast in limbo years,and hence it might even be only months in reality) ,and i assume that when he left ,he didn't get to say goodbye to his children,and he had missed them since ,hence his subconscious projected their shade when he's in a dream ,but he couldn't bring himself to look at them ,he wouldn't ,and i think it's one of his burden,which he hid deep inside.another burden and pain came from his wife ,he'd caused her death in the first place ,and unable to shake off the feelings of unbearable guilt and self-hatred( this is indicated when his wife ,which was part of his subconscious,always turned up and ruined his plans -and can only be explained as he hated himself much and the job that had taken her away,and in a state of being unaware of how bad things could turn up to be,his subconscious overrided him and merely proved to act against it_against everything that was closely associated to the source that had taken her away from him ),when his wife called him to look at their children ,he resisted the urge ,cause he knew that if he looked, he'd truly believe what she had said ,believe that the dream was actually real ,and those were his real children,and he would stay back with them.finally he could let her go ,and the endless torment of remorse stopped, he's able to leave the past behind and no longer haunted by the ghost of her gentle presence.however, in the end,the scene of children faced him cant be verified as something that is going to tell the viewers it's still a dream or reality for Cobb.This's because it all depends on the dreamer-Cobb himself.as he had already ended the guilt he had felt for Mal ,and which meant to him,there was no longer fear and worries for facing his own children,even when they were in his dream.

2)he's actually back to reality.as he didn't wear the ring he'd been wearing when he's in dreams.and that the saito who had got so much older in the limbo,why didnt cobb aged when he's in limbo,maybe because saito had become lost in time and thought that the world he's in was actually real ,and cobb still had the faith inside him ,able to keep his mind clear and hence limbo had no effect on his mind and physical appearance.to go back to reality ,you had to first realize that limbo wasnt real ,and kill yourself .he went back to saito and told him the truth, which i think after that he laid his hand on the gun ,he killed cobb and then commited suicide ,to initiate the kick ,and they all went back to the real world .i think if you are in limbo ,you do not need to get pass those 4 layers ,you can simply jump from limbo to reality when you die there =.= another guess . the genius of the whole movie is that the director left the ending ambigious and contradictory .>< there will be debate going on ,as long as this movie is still on screen .oh god...