I'm surprised aliens is the low one here. The exact question is "Do you believe aliens exist, or not?", not something more specific like little green men in flying saucers abducting cows.
The universe is large. In the tiny slice we can observe well enough to draw conclusions, Wikipedia currently lists 62 "potentially habitable exoplanets". I'd be much more surprised by intelligent life being unique to Earth than by there being many planets harboring intelligent life, or to answer the question as asked: I believe aliens exist.
The universe is large. In the tiny slice we can observe well enough to draw conclusions, Wikipedia currently lists 62 "potentially habitable exoplanets". I'd be much more surprised by intelligent life being unique to Earth than by there being many planets harboring intelligent life, or to answer the question as asked: I believe aliens exist.
https://en.wikipedia.org/wiki/List_of_potentially_habitable_...