Alien Abductions: Why?

The question is not only why do aliens see the need to abduct earthlings, but also why do they see the need to keep doing it?  It's not as if earthlings are that different or have changed much over the years.

Why do aliens see the need to abduct earthlings?

Professor David M. Jacobs is an historian and retired Associate Professor of History at Temple University specializing in 20th century American history and culture. Jacobs is also well known in the field of ufology for his research and authoring of books on the subject of alleged alien abductions. He has lectured widely, been interviewed, and participated in numerous television and radio shows on the subject of alien abductions. Read more