Why Do Christians Get So Emotional About How I Interpret ���Day��� in Genesis?

As I���ve spoken and written over the years on topics regarding creation, I find many Christians agree with me about evolution, but they vehemently disagree when it comes to the age of the earth. And they don���t just disagree���many get very upset and quite emotional at times over my insistence that the days of creation are ordinary 24-hour days and that the earth can���t be billions of years old but is only about 6,000 years old. Why all this emotion?

Well, I don't find such people getting so ...