Your are reasoning like a 15th century conquistador with spaceships.
> Any kind of contact will ends up in abysmal disaster as we have seen in the past, when advanced civilization shown up on shores of less advanced one.
Interstellar travel is mind-boggingly difficult and expensive. Even assuming 100% fuel-efficiency, it is basically impossible to conquer other worlds, and doing so would come at zero benefits for the homeworld, as anything that could be brought back from conquered exoplanets could be made for far cheaper and faster at home. Atoms are the same everywhere in the galaxy, no planet has any unique stuff that is valuable enough that is makes sense to haul it across the galaxy.
The one thing that is cheap to trade is information, so why not cooperate with everyone? Competition is useless as we've seen, so why not give away everything we know in exchange for everything they know?
We could give them everything what we know and they could give us back a relativistic kill missile. No reason to try to conquer a planet if you can just extinguish a protentional threat, which luckily was naive to be useful before extinguishing.
Your comment just reminded me of a sci-fi novel called Roadside Picnic that I learned about on a different thread. Just because of that idea where aliens could come across us and not pay us any attention in the same way that a human might ignore an ant.
> Any kind of contact will ends up in abysmal disaster as we have seen in the past, when advanced civilization shown up on shores of less advanced one.
Interstellar travel is mind-boggingly difficult and expensive. Even assuming 100% fuel-efficiency, it is basically impossible to conquer other worlds, and doing so would come at zero benefits for the homeworld, as anything that could be brought back from conquered exoplanets could be made for far cheaper and faster at home. Atoms are the same everywhere in the galaxy, no planet has any unique stuff that is valuable enough that is makes sense to haul it across the galaxy.
The one thing that is cheap to trade is information, so why not cooperate with everyone? Competition is useless as we've seen, so why not give away everything we know in exchange for everything they know?