What drives one to care about that? No offense to you, but when I see some of the folks on TV ads for DNA testing, I have trouble understanding their slant on how happy it makes them.
Curiosity. Knowing where we came from culturally, ethinicity, others to whom we are related. It is a grounding especially if one has NEVER known who their ancestors were.
I find it hard to understand why a person would NOT want to know.