End quite depressing..?

I didn't like the end of this version of the Petit Prince much - it just went too far away from the book and seemed unnecessary. I think they maybe thought the real ending of the book wasn't satisfying/happy enough - which is that the PP is bitten by the snake and falls to the floor, but the next day the pilot finds that his body isn't there any more, and we suppose that it somehow mysteriously dematerialised and rejoined his spirit on his asteroid. But the aviator also worries about the rose, because he drew the PP a muzzle for the sheep, to avoid it eating the rose as well as baobab shoots, but then he remembers that he forgot to put a strap on it to hold it on... So, there is a feel of some uncertainty.

I thought the ending of the film didn't really respect the book and characters that much and didn't add anything in terms of the message, that wasn't already there.

But also, if you think about it, it didn't really make much sense and was kind of even sadder. Why would the PP, instead of getting back to his asteroid, have ended up being stuck on that other planet and working for the businessman?

Also, when he does finally get back, he finds that the rose has died and the baobabs have overgrown the planet completely, which is all the worst things he could have imagined. But then we're just led to believe that by seeing 'with his heart' suddenly everything is fine again??? I don't think 'seeing with the heart' is meant to be as simplistic as to mean just living in a dream world and ignoring reality. The reality seemed to be a disaster in this scenario :(

Also, it's kind of weird that the end blends reality and fantasy so much and you are left wondering a bit what is supposed to have really been happening (though I guess you just have to suspend your disbelief and not ask..). One reviewer on a French site went so far as to think the little girl died climbing out of the window and that's why her spirit went off and joined the PP. But I think that's a little far-fetched...