Why do people have such a problem with Cousin Couples?

Even though as far as most religions go, it's considered OK, because of Leviticus 18.


And even though Science tells us the risk of deformities has been way over-exaggerated for such a long time. I mean First cousins only have a 1.7% increased chance after all - women over 35 carry the same risk and it's actually higher with them but they don't suffer for it.





So why - and put some actual thought into it aside from ';it's sick'; or anything like that. Because that's no argument.





And it's different than being with your brother/sister. Because they are not your bro or sis. And some people never grow up with their cousins... I, for example, only see most of my cousins each summer.Why do people have such a problem with Cousin Couples?
In Western society? Look no further than European royal families. Regardless of what science and religion will say in the present day, there's already an incredible stigma against anything that has a shot of producing such inbred lunatics.





EDIT: I ought to clarify, before any litigants pounce on me, that my statement is in reference to the royalty of yesteryear, and not the present.Why do people have such a problem with Cousin Couples?
The reason it would be weird in my opinion is the fact that each of your parents are siblings, and that would just be awkward in my opinion.
cousins are still your relatives though.
in a lot of religions it is ok to marry you cousin.. like muslim. but they also don't date or go out and meet people. there is limited interaction between the sexes so when the man is ready to get married his family will find him a women , and they are extremely proud of their lineage so you cousin is a good choice,, but in more open cultures like America it is extremely taboo. and i think it is because we are taught to believe it is nasty. animals bread with their siblings and relatives.. humans probably usta too. than we developed societies and tought our young that is its bad. its a common sense thing.. its just not healthy.. science may say now that deformities arnt that common but i have worked with animals for a long time and based on that ( i know its not the same ) but we are basically made up the same way.. when 2 people unrelated have children like a dog for example the child inherits not only genetic traits but they way it thinks too. science has also proved this. so if cousins have kids maby their kids will be fine but if their genes cross into the same genetic pool again and again their kids will start to inherit any genetic defects such as hemofilia ( was started by inbreeding) and the chance of being dummer. and this will carry over when that person has children with someone out side the family because those traits and ways of thinking have been bread into them.. genetically they will be dumb and weak.. diseased. so the argument is based on scientific fact that it is just not conductive ot a healthy society or the best thing to do for the human race when we are quite capable of finding someone that does not share or dna.. it even says in the Qur'an the profit mohammad said to find you mate from far away.