Why is it absurb to believe that we are the only life in the universe that is capable of space travel? It makes perfect sense to believe this. After all, we are the only life form that is capable of space travel on this planet (out of thousands and thousands of species). What is the chance that this could happen anywhere else? I'd say about zero.
"What is the chance that this could happen anywhere else? I'd say about zero."
This speculation is based on what?