My mother and her sister have always been 'big' on family trees... I not so much unless I know snippets of history behind the people. Just names and dates don't do much for me, but on the other hand it is handy to know some of them so I know who on earth my mother is talking about when she mentions a certain branch of the family. But really it is much more interesting to know things like family members being 'in cotton' and living rather well off in Cheshire, but then losing all their dosh somehow.
I have two family 'claim to fames': on my mother's side, the last man to fight a duel in Scotland (legally at least). And yes, he won. On my father's side I am a not-too-distant relative of a certain Welsh poet with a drinking reputation.
I like 'realness' and I wish I had the time and the patience to dig out real life information about my forefathers (and mothers). Maybe some day I will and perhaps I will get bitten by that 'bug' to which genealogy fans are prone.