Second, it is just possible that--in a less than tactful way--your uncle was taking an interest in your life. When a question like this comes up, just roll with it--give an honest answer, as you did. Maybe thank the questioner for their interest (chances are, that'll really put them off!). A lot of my relatives aren't too happy with my choice to leave college after two semesters, but I'm satisfied with the decision I made, so I just don't sweat the judgement. It's kind of nice to know that my aunts and uncles--whom I see only once every five or six years--remember something about me, other than "Aren't you Frank's kid, the one who never shut up?"
for what it's worth, I get the "kid who wouldn't shut up" question every now and again also =)