Oh man, these crashed saucers. I mean, did they use the southwestern US for test flying unstable prototypes or what?
There have always been two things that pop up in my mind when this issue comes up. Because inevitably the point is mentioned that if aliens are technologically advanced enough to travel from lightyears away or from another dimension or wherever they are from, surely they can keep their ships under control and not crash.
First, regardless of how advanced they are, they are still mechanical objects and ultimately any mechanical object will fail. We really don't know how many craft of extra-terrestrial/dimensional origin (if any) visit us on a regular basis. Maybe it's thousands and only a tiny fraction have ever crashed? If in fact it is a very large number, one or two crashes is to be expected, I would think. After all, I'm sure that our modern jets would seem like super advanced technology to a less advanced civilization, and yet, they still crash.
Second, the fact that most of these cases DO take place in the southwestern desert leads me down the military test craft line of thinking. After all, the remote areas of New Mexico has always been fertile ground for military testing. What gives me pause though is the fact that UFO reports often involve descriptions of something so advanced that I just can't believe we possess that sort of technology.
Once again, note how in the "beginning" of the modern saucer phenomenon the occupants are described as little men. Not little creatures, humanoids or beings (as I would describe the modern image of the small greys). Of course, back then, most people probably thought that intelligent beings from another planet had to be human-like (because of religious beliefs or simply because they couldn't imagine otherwise). Which would point to the possibility of them being pure myth. But H. G. Wells' description of the Martians in War of the Worlds shows that at least some people could imagine them otherwise long before the 1940s and 50s.
This has never been a huge stumbling block for me. After all, when we look toward other planets that might harbor life, we usually look for other earth-like planets with lots of water in the traditional habitable zone. And I feel like if the planet is really that earth-like, shouldn't the inhabitants also be earth-like considering they are existing within such a similar environment?
Of course, there is always the possibility that our idea of "life" is very limited, and that there are planets that are nothing like earth that have their own sort of life which is tailored to its environment, an environment that is very different from what we know and so the life that exists there is also very different.