This is simply due to the fact that people tend to let fear rule them without observing the facts, and unfortunately not all citizens are educated and unbiased. Also, religion tends to be a foundation upon which most people reject biotechnology as well as bioethics, in general.
References:
Caplan, A. L. (2009). The birth and evolution of bioethics. In V. Ravitsky, the Penn Center Guide to Bioethics. New York, NY: Springer Publishing Company. Retrieved from http://search.credoreference.com.vlib.excelsior.edu/content/entry/sppbioeth/the_birth_and_evolution_of_bioethics/0?searchId=
The Ethics of Biotechnology [Video file]. (2009). Retrieved from http://fod.infobase.com.vlib.excelsior.edu/p_ViewVideo.aspx?xtid=39779&loid=63679
Zielinska, A. C. (2015). Moral Principles and Ethics Committees: A Case against Bioethical Theories. Ethics & Social Welfare, 9(3), 269-279. doi:10.1080/17496535.2015.1024153 Retrieved from