I find the ancient aliens theory to be bunk for the most part. Not because I'm discounting the possibility, but because there's no direct evidence of anything remotely ET related.
It is true that we don't have enough evidence to fully explain the connection between a series of poorly understood coincidences in the past. However, rather than let it sit in the "unsolved" category until/unless more information is found, some people decided to fill in the blanks with an alien race.
Regardless, the biggest problem I find with ALL alien encounter stories is motive.
Modern UFO tales only make the slightest bit of sense as part of research efforts on their part, but such efforts are far more effectively conducted in a manner that no one would be aware of rather than randomly flying around and abducting stoned hippies for a probe session. The fact that many of the more credible UFO stories in the past have turned out to simply be sightings of now declassified black project vehicles...
The ancient aliens, if they existed, left behind no evidence of having taken resources, and did not leave any advanced technology behind, at least none that was sustainable. For example, one of the programs was talking about old aircraft, if any such vehicles had been built here or left behind, there would be gobs of physical and/or chemical evidence for us to find due to the materials required. If an alien race was here during our early days, all they seem to have done was set themselves up as temporary rulers/gods, then got bored and left without making any lasting impression, hardly behavior I would expect from a space-faring race.
It is true that we don't have enough evidence to fully explain the connection between a series of poorly understood coincidences in the past. However, rather than let it sit in the "unsolved" category until/unless more information is found, some people decided to fill in the blanks with an alien race.
Regardless, the biggest problem I find with ALL alien encounter stories is motive.
Modern UFO tales only make the slightest bit of sense as part of research efforts on their part, but such efforts are far more effectively conducted in a manner that no one would be aware of rather than randomly flying around and abducting stoned hippies for a probe session. The fact that many of the more credible UFO stories in the past have turned out to simply be sightings of now declassified black project vehicles...
The ancient aliens, if they existed, left behind no evidence of having taken resources, and did not leave any advanced technology behind, at least none that was sustainable. For example, one of the programs was talking about old aircraft, if any such vehicles had been built here or left behind, there would be gobs of physical and/or chemical evidence for us to find due to the materials required. If an alien race was here during our early days, all they seem to have done was set themselves up as temporary rulers/gods, then got bored and left without making any lasting impression, hardly behavior I would expect from a space-faring race.