Inspired by the
Why the aliens will be nice thread:
Reasons why aliens visiting us might not be nice:
-they don't think we're intelligent enough by their standards and therefore eradication does not matter
-they conclude we are an evolutionary cul-de-sac (hey, they could have the technology to determine that - or they are just space nazis) and need to be mercy-killed
-they can't communicate with us on any level nor can they imagine that we use different methods to communicate than they do (see Ender's Game for example)
-they simply don't care; they want a planet at this specific position to settle on.
-they see us as a potential threat and launch a preemptive strike before we evolve enough to be a bother
-they conclude through their observations that we are a warlike race that will never agree with their morals and need to be exterminated (similar to the above point)
-they think any technologically less advanced race is slave material
-they eat suns
-they eat planets
-they are not advanced at all, but parasites or predators that can survive in deep space (e.g. borg, body snatchers, alien etc.)
-they don't care about earth/us at all but use it as gambit in an interstellar turf war (if they are any like humans I'd say this is a rather likely scenario)
Any race advanced enough to make a propulsion able to span the distance between star systems in reasonable time has the energy to decisively win the war without even breaking a sweat. So has any race tough and long-lived enough to get around without such propulsion.
Any more takers?
