Why is the mention of genitilia a huge issue in normal talking?

I can imagine that the mention of genitalia during a normal conversation is very offensive and it is inappropriate to talk about private parts in a public setting. I think that this type of discussion is best reserved for having it with your doctor or gynecologist.

Even if you chose to discuss it with a family member, it might be offensive depending upon your relationship with the person. Also, some people may not be entirely comfortable in their sexuality enough to be able to have that type of discussion.