No. No you don’t.
You don’t have to know what you’re looking for.
You maybe don’t want to know.
I have a fairly accurate family history, but from the cousin that murdered his uncle to the people who did far worse things, there are often things about your family you just don’t want to know.

You should know something is wrong when you come home and say “Hi mom! Hi Sis!” and there is only one woman standing there.
The problem with everyone winning the lottery is that the payoff is small. Heh, Wilt Chamberlain money.
Never ask a question if you don’t want to hear the answer.
Nobody ever discussed my paternal great-grandfather when I was growing up.
Turns out, I’m an octaroon.
Yep, I found it in the woodpile.
Hah! Dood. At least ONE of my readers has a big wiener.