Ryujin
Legend
The "ancient aliens" types get around the probabilities by claiming that aliens created us. They use this theory to manufacture evidence, which they then flip around and use as proof of their theory.Because of the scale of the universe, I feel convinced that the probability of many inhabited planets must be close to 100%.
And because of the scale of the universe, I feel the probability of any one intelligent species getting any form of contact with another is probably close to 0%.
(Surely intelligent species learning of each other must happen somewhere in the universe at some point. But the chance that we will be one of the very few this happens to is probably really low.)