In a debate with Noam Chomsky in 1971, Michel Foucault was asked by the moderator, Fons Elders, why he was so interested in politics. Here’s his response:
Your question is: why am I so interested in politics? But if I were to answer you very simply, I would say this: why shouldn’t I be interested? That is to say, what blindness, what deafness, what density of ideology would have to weigh me down to prevent me from being interested in what is probably the most crucial subject to our existence, that is to say the society in which we live, the economic relations within which it functions, and the system of power which defines the regular forms and the regular permissions and prohibitions of our conduct. The essence of our life consists, after all, of the political functioning of the society in which we find ourselves.
So I can’t answer the question of why I should be interested; I could only answer it by asking why shouldn’t I be interested?
Not to be interested in politics, that’s what constitutes a problem. So instead of asking me, you should ask someone who is not interested in politics and then your question would be well-founded, and you would have the right to say “Why, damn it, are you not interested?”