I always think it's hilarious when people sign up on FR just to promote themselves. Such individuals post nothing but their own articles on the forum, and fail to disclose that they are just trying to publicize their own work.
Even funnier is when that same person is writing on a subject which they have just about no first-hand knowledge. You make it sound like there are evil scientists sitting in a lab somewhere trying to create a Frankenstein-type monster. A single transgene (which need not be obtained from a human embryonic stem cell) is integrated into a plasmid vector that is then injected into animal, and generally mouse, blastocysts. The blastocysts are not destroyed. They are implanted in a foster mother and are born. These blastocysts are what develop into the chimeric mice. BTW, the chimeric animals are not even the goal of transgene studies. The chimeric mice must then be mated with wild-type mice in order to obtain a mouse that is homozygous for the desired gene (the chimeric mouse is not homozygous). The progeny of the chimeric/wild-type cross that are homozygous are the mice that are examined.
The purpose of transgene studies is to create models of human disease in animals, because such experiments on humans are obviously unethical but also not even scientifically feasible, for reasons that are a little too involved to delve into on this forum.
I do value and believe in the sanctity of life. However, I also dislike seeing the truth distorted. Your argument would be a little more convincing if it did not completely misrepresent the science that you are using as an example of that argument.
You would be suprised as to how far people, with no ethics, will stoop if they think they can make money on leftover babies and baby parts. This is one of the reasons why they want fetal stem cell funding, just in case there might be a goldmine in there somewhere. Do you think they REALLY want to help Christopher Reeve and Michael J. Fox?