The universe is so large, that I'm sure there are millions of planets out there with life. However, since we've had decent tools to look for signs of life for

The universe is so large, that I'm sure there are millions of planets out there with life. However, since we've had decent tools to look for signs of life for decades and found nothing, for any one person to say they secretly made contact years ago is an 'extraordinary claim'. I suspect that the universe, as a whole, only became hospitable to life recently. Probably many planets spawned organisms around the same time Earth did. That means nearly all of them are too many light years away for signs of their intelligent life to have reached us.