Panayiotis Zavos of the University of Kentucky is an expert on male infertility. Italian gynecologist Severino Antinori has a string of reproductive firsts to his credit. Many people are asking such questions about biotechnology these days. But they generally question bits of the technology. Some people question the ethics of stem cell research.
Stem cells come from human embryos a few days after conception.
Left to nature, these cells would develop into a whole person. Captured and tamed in petri dishes, however, experimental stem cells could one day be used to grow organs to replace worn-out body parts. I'd guess such concerns don't resonate too widely in the Bay Area. The answer is no, we never have, and in any case it's not the sort of question that generally gets asked in Western civilization. Our culture is based on an implicit faith in technology.