does Extraterrestrial life exists? Trillions of planets exists in the universe, but there is no proof that exist any sort of Extraterrestrial life there.
what can't be proved, exists?
Personally I won't believe anything exists until it's proven to exist. I hope there is extraterrestrial life, it seems pretty logical that out of the countless planets in the universe more than one would be inhabited by other beings. But until that's proven I won't believe they exist.
When it comes to god and religion though it's different. Same as before I won't believe a god exists until it's proven. However unlike extraterrestrial life I see no logical reason for a god to exist, let alone the christian/islamic/hindu god(s).