Re: Credulous or corrupt?
"If aliens managed to get all the way across the universe to our solar system, they'll likely say hello, Or integrate us into the borg collective."
The only examples we have even close to that scenario is slightly more advanced human civilizations "discovering" other slightly less advanced human civilizations. The less advanced ones have almost always come off much, much worse than the advanced ones, either through conquest, culture shock or disease, even when the discovers had good intentions.
I'd like to think that there is a "Federation" out there with a strict non-interference policy and UFOs are just rich kids breaking the rules and buzzing the natives for a laugh.