Originally Posted by Buzzard
Actually, if you read and do some research, you will find that there is some reliable scientific evidence to support the idea that they are born that way. It may take some reading to find the evidence, but it is out there for those who are willing to take the time.
I would post some more links as I have found numerous, but haven't had the time in the past few minutes to read through the plethora of them that I have found, and don't wish to provide information that I haven't verified or actually read through. I've been burned before because of this, and don't wish to provide false information if possible.
That's just a lot of theories and guesswork. No real evidence.