You do you, but how else is a parent's question to be taken? I've never had any interest in sharing the depths of my life with my parents, and I'm in my late 40s. That's not because they're bad people; they're not. But they have always kept their life before me separate from their life after me, and I think that's a two-way street.
I don't need to know about how they hoovered up lines of cocaine and went to fetish parties (I don't really think they did either, but it could have happened and I'd never have known), and they don't need to know what I do with my spare time.
Process of elimination is a very poor strategy for explaining other's behavior. Worse, much worse, than chance in my experience. I find even random selection to be better at behavior explanation over process of elimination.
Among all of the behavioral explaination tactics, I've found asking people to have the best predictive power. To that effect, you would have to ask those parents.
I don't need to know about how they hoovered up lines of cocaine and went to fetish parties (I don't really think they did either, but it could have happened and I'd never have known), and they don't need to know what I do with my spare time.