Life Elsewhere in the Universe

As said by many, by both ignorant and learned people, the universe is so massive that it is simply stupid to think that life does not exist elsewhere. We have only discovered 1 or less % of the universe. Then there is the galaxys we have and haven't discovered. We once got the WOW! signal from, correct me if I am wrong, the Andromeda Galaxy. Also, the amount of ancient cave drawings and statues and even paintings that show something that either resembles a ship or Grey (alien often in ufo abduction reports.) And the amazingly small grave from cowboy days that the cemetary owners do not let you see. I see this as evidence. What do you think?