Ok, so I finally watched it, and all I can say is "Wow". It's a masterpiece... seriously underrated, imo. I think as time goes by, people might recognize this and it'll become a classic in 10-15 years.
As for the "confusion" surrounding the movie, I wasn't confused at all. I actually understood it from beginning to end. I don't really know why there's all this talk about confusion... I think it all comes down to people not liking non-linear storytelling. I LOVE non-linear, so this was easy for me.
I realize I'm a year late in talking about this (sorry), but here's my take, and it's very simple:
- Izzy wrote a book called "The Fountain", and left the last chapter for Tom to write. She said it starts in Spain, and ends at Xibalba, the star.
- This means that all of the scenes in the past are Izzy's book. Tom as a conquistador is a part of the book... it never really happened. Proof is that when Tom begins to read the book, it scrolls across the pages and cuts to the scenes of the past... which is the book.
- Tom writes the last chapter, and that last chapter is the conquistador finding the Tree of Life, drinking the sap, and then turning into a tree himself. His ending is about him letting go of Izzy and dying, eventually being reborn (into a tree). If you notice, the book DOES end at Xibalba like Izzy said, because the conquistador sees the star (nebula) before he turns into a plant.
- The future scenes (where Tom is bald) is really happening. These scenes are NOT in his head. He planted a tree seed at Izzy's grave, and when the tree grew it had Izzy in it. The tree was keeping a tiny bit of her alive (because the tree was alive), and when the tree died in the spaceship (bubble), Tom knew that he couldn't bring her back, and thus he finally realized that dying is the only way to live forever. He was then okay with death, knowing that he'd see her again. "Together we will live forever"... in heaven, or what-have-you. So Future-Tom dies, and that's the end.
- The final scene is Tom planting the tree seed, which is what he did long ago... When the tree grew, and Tom had discovered the way to stop death... remember Ellen Burnstyn told him the monkey was 100% okay as soon as Izzy died in the hospital.... Tom used the cure to make himself immortal.... he lived through 500 more years, took the tree out of the ground, put it in his space bubble and travelled up to the star - Xibalba.
See? I think it's simple. I don't understand why there's so much debate and arguing. IMDB is having s***-fit over it. I think it's easy.