Interstellar, Near Death Experience, and Cinematic Brilliance

I didn't think it was possible, but I now have a deeper appreciation of my favorite film - Interstellar - and a deeper respect for its director, Christopher Nolan. I've read numerous times that the ending of Interstellar is ambiguous, as the endings of his films usually are (c.f. Inception, Memento, The Dark Knight) - and before my most recent Interstellar experience, I had not understood why the ending of Interstellar might be interpreted as ambiguous. Oh boy, but it is... The "ending" of Interstellar happens when Matt Damon's character dies (I didn't spoil anything - Nolan spoiled the greatest piece of human art ever made by including Damon's scene/character). After this sequence, the spaceship in which the characters are on beautifully falls into a black hole. Humans - let alone consciousness - cannot survive back holes. Cooper dies as he goes into Gargauntua. Those are his final moments alive in the film. As reported by people who have near-death experiences, time slows down, memories flash before one's eyes, unfulfilled fantasies are experienced. The final 30 minutes of the film are just that: Cooper's death-is-nigh hallucination. The "tesseract" sequence - although beautiful and poignant - is implausible, even compared to the other sci-fi sequences in the film. Books fall off their shelf some times, and Cooper - in his dying, fantastical, hallucinatory state - reinterprets them in a way that his brain will copacetically accept his death. His life literally flashes through, and before, his eyes.