Perhaps it is simply that our large, complex and unstable brains cause us to be more deluded, and more deeply deluded, about many more things than other animals.We're not like the monkeys, Joe, that's the whole point here. We possess an attribute the monkeys never will have, the ability to make a spiritual connection to something greater than self. It's not the product of evolution, nothing else in nature does it.
The need for religion (and other 'life after death' belief systems) can be summed up in three little words:
Fear of Death.
The difference between Monkeys and the rest of the animals, as Boss and others have pointed out, is Sentience. Sentience is living with the certain knowledge that life ends, and the ability to imagine possibilities for an extension.
Is there ANY religion that's not focused at least in part on what happens at death?
![dunno :dunno: :dunno:](/styles/smilies/dunno.gif)
The need for (insert your preferred Deity here - a.k.a. 'God') is directly attributable to the knowledge of death, and the fear that knowledge generates because of the inevitable question, "What's next?!?"
To console the living by speaking of the recently departed with over-confident statements like "She's in a better place" is arrogance defined, considering our actual knowledge of the subject.