There was a slim chance that homo sapient would die crossing the Indian Ocean or pacific, yet we're here. Intelligence means taking risks, we ought to take a leap of faith that others are friendly. In my pov, the risk is small because I don't think there are other intelligences out there that both a) have the ability to speak to us and b) have any reason to (and also c I don't think there are other intelligent species in our future light cone).