INCEPTION'S ENDING*mega spoliers*

The more I consider it the less certain of my answer I become. The only thing that keeps me resolute in it is that rather than being treated as a threat by the people (or projections, if he is in fact dreaming) in the end, he is welcomed warmly by not only his father, but his children as well. We know from early in the story line that the deeper he goes the more fragile the dream is and the more likely the projections would be to simply attack and kill him. Something also worth noting is that the only projection to actively interact with them (aside from trying to kill them) is Moll. His family embraces and even hugs him at the end. Certainly not the same aggressive projections we saw throughout the rest of the movie.