Rather than asking people's opinions on the subject, it would be better to do some research. Here is a place you can start:
https://en.wikipedia.org/wiki/Inbreeding
To give a specific example, in the case of first cousins breeding, it doubles the chances of genetic disorders compared with unrelated people breeding.
https://en.wikipedia.org/wiki/Inbreeding
To give a specific example, in the case of first cousins breeding, it doubles the chances of genetic disorders compared with unrelated people breeding.
"A wise man ... proportions his belief to the evidence."
— David Hume, An Enquiry Concerning Human Understanding, Section X, Part I.
