In a closed system energy is neither created or destroyed. I like to thik we have a soul of sorts, which is essentially the energy that resides within us. I also hope that it will still be sentient, given that our brains work by electrical impulses, our concousness governed by energy. Call it wishful thinking, but I sincerely hope that there is something waiting for us (even if it's just a "pool" of energy), but a part of me says that the energy will simply be transferred in another form. I don't claim to be scared of a lot of things (no real phobias- spiders don't bother me, rodents fascinate rahter than repulse etc), but death is one of the few things.