There are two different types of alien abductions happening to humans here on earth. The first type is the physical abductions. This is the one where the abductees physical body, in- tact, is taken to an alien ship. Once there, the aliens do their poking and prodding, take samples, impregnate human females and later remove the fetus for their breeding program and whatever else they want to do.
Historically people who have had interactions with an unknown source such as extraterrestrials lived private lives with their experiences and had very little opportunity to explore what was happening to them. Those who braved the public eye were often ridiculed labeled with a wide variety of mental disorders and often institutionalized. Time has changed that perception for many. Still there are those who would belittle people doing nothing more than pursuing their interest in UFO and extraterrestrial phenomenon.