I know it's been a few years since the movie Inception came out, but last night Stacey and I watched it for the second time. It's been awhile since we watched it the first time and I've always wanted to watch it again since it was a great film based on a novel idea. I don't watch many movies anymore because they typically aren't worth my time and/or money. Inception was an original idea and therefore worth watching.
After watching the movie everyone wants to know, or has their own opinion on, what the ending means. Does the spinning top really fall? Is the last scene reality? There are a lot of different theories out there, but most of them focus on the wrong things, like the ages of the children or what clothes they were wearing at the end or this or that. For me, there's really only one thing worth analyzing that is consistent with the rest of the film to determine what the ending means. Everything else is really just circumstantial and speculative.
Throughout different parts of the movie we are told that each person's totem, in Cobb's (Leo's) case, the spinning top, is the only way each "dreamer" can tell if they are dreaming or not. We see another character has a loaded dice and another, a chess piece. The director has made it clear (from what I read on the internet) that the entire movie was not a dream. That is, at some point the characters are experiencing reality. So, if we can accept the idea at face value that the totems work as described in the movie, and because of that, the characters in the film can actually determine what is real and what is a dream, it's all pretty simple. Nothing else in the movie suggests otherwise or contradicts the idea that the totems work to determine the difference between dreaming and reality. Additionally, because the characters have had so much experience in and out of dreams (and therefore, with their totems), and that each person has their own totem (multiple "checks"), those things further support the idea that, at face value, totems work.
So that leaves us at the last scene with the assumption that Cobb knows the difference between what is real and what is not real. If not, the entire concept of a totem, as described in the movie, would be inconsistent. This means that either Cobb really made it back to reality with his children, or if it's a dream, at least knows it is and has decided that he wants to "stay" in this reality because it's a happier place then his real life (if things in real life were never resolved). In other parts of the movie he refuses to look at his children while in a dream because he knows it's not real, and because he and Mal, in their imagined world, eventually become dissatisfied with it because they knew it wasn't real (and therefore came back), it's unlikely and inconsistent that he would choose a "dream reality". Cobb's entire MO is to get back to his children in reality, and if he can tell the difference between dreaming and reality, I doubt he would all of a sudden choose otherwise.
Either way, the movie has a happy ending. I believe the last scene is reality, based on what I said above. After all, the top wobbles right before the movie goes to black. The only time in the rest of the movie we see the top spinning indefinitely is in a dream, so the fact that it wobbles also suggests it falls shortly after the movie ends.