I loved this movie and it totally reminded me of what was done to the American Indians in the U.S. I did like the Nav'is love for nature and all living things and found that their religion was very similar to that of the native americans. There is no suicide message here at least in my view and how anyone would get that is beyond me, unless you are contemplating suicide yourself. The main character fell in love with the aliens and their way of life and he had to die to become one of them. He as myself became disgusted with his species and his poeple.
There is nothing people will not maintain when they are slaves to superstition
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