Ganoncrotch said:

You should be aware that every species that we know of fits into a chain and we're at the top of ours, the apex predator, chances are if there is Aliens from another planet they're just as likely to have been the most successful at war to get to the point where they're able to consume their planets resources to fly into space.

While you have a point, I want to believe that such creatures while violent and primitive at first (like we are now) evolved beyond all that bellicose nonsense and acquired wisdom by defeating ignorance (as I hope we do too one day in the far future). So that by now such creatures may be full of benevolence and enlightenment and only seek to further themselves while respecting the universe they live in.