Some people are just too unimaginative to be able to understand why anyone would be interested in family history. I remember mentioning something to a friend once, just in passing, about my hobby, and she just stared at me, brow furrowed, mouth open, and asked me why on earth I would be interested in my ancestors? I pointed out that a very high number of people in this country are into family history but her "you freak!" expression didn't fade.
Many years ago, on my mother's side, an uncle by marriage warned me to keep out of family history, saying "You might find out something you don't like." I told him I couldn't imagine anything that could upset me and I intended to carry on with it. On my Dad's side, my grandmother and great-grandmother were as helpful as they could be, giving me details and information, although my dear grandmother did neglect to mention that she had a box of old documents including certificates stashed away, even though every time I received a new certificate from the GRO she would look at it with much interest and confirm she had known some of the information on it!

Relatives! Who'd have 'em!