Ghostwise said:
The reapers have done this before and they will do it again. Just like the Cylons in Battlestar Galactica. The major plotline was almost ripped straight from Battlestar.
Actually it was ripped straight from Fred Saberhagen's Berserker series. Seriously, the books are about a series of mechanized doomsday weapons left over from an interstellar war between two races of extraterrestrials from 50,000 years ago that are designed to wipe out all sentient life.
OT: We still don't really know the true purpose, motivation, and original intent of the Reapers. Perhaps they are simply a security system for a nearby galaxy that is meant prevent any technologically superior species from migrating outside of the Milky way. Perhaps they provide a necessary service, a la Galactus and without this cycle of creation and destruction the Galaxy would eventually destroy itself.
It's also worth noting that the Reapers themselves cannot be evil any more than a toaster can be evil. They are machines, they can only do what they were programmed to do. Until we know why they were designed and by whom, we can't really judge their actions as 'evil'.