Here my story & theory on extraterrestrial life...
Most of my life I believed that UFO's could very possibly be real and anyone who ruled it out completely was clueless since space goes on & on.
But, my opinion has changed in recent years because;
A. If you believe in God & the Bible, chances are we are his only creation
B. Even if you don't believe in God and think we exist via chance, everything had to come together so perfectly at the time it happened, that the odds of it happening again, elsewhere, are beyond astronomical, and not likely.