Everyone has their own beliefs about extraterrestrial life. Theories and beliefs on this subject are more contentious than Various factions of Christians fighting over pre-trib vs post-tribulation rapture doctrines.
I am surveying not beliefs but actual experiences amongst our ranks. If you have had one or more eyewitness firsthand accounts of UFO's or ET's, please list your experiences here.
Two. One in Calif 1978 and in Az in July 1997. First one was a round red one following the contours of the land silently and quickly alongside the freeway at night outside of Escondido. Yes it did look exactly like the red orb one in Close Encounters, but larger. Long line of swerving cars but no crash. Second was very typically described type of watching a "star" above my head at night that was forming a precise pattern of straight lines and right-angle turns, then a diagonal path which faded and disappeared. This was not long before the 1998 Phoenix Lights incident which passed over my neighborhood but I was inside and did not see it, on it's silent path from Kingman area AZ to phoenix.