I began, like most people probably, tracking down my ancestors, and in some cases their siblings. Then some years ago, I set myself a project to trace all the descendants of one of my Kentish 3xgreat grandfathers up to 1911, which considering the size of 19th century families was quite a task. Since then, I have written a separate chapter on each of his children and their families, some more interesting than others, and one or two abandoned as too boring to write up. Sorry! On the whole we are not an exciting family.
My tree, not on line, has 2362 people on it, but that also includes my husband's family and now my daughter-in-law's.
It has a lot to do with the chase and the detective work, and not only with family, but also local history. I have researched and written up several local people and families, and the research is just as exciting!
Quote from the OP - "Does there come a point when you think, "actually, this is just too remote from me, I'm not interested" or do you just keep going?" I have to say, I do reach that point at times.