Imagine you are the last person on Earth. Write a diary entry describing your thoughts and feelings.

Dear diary, you have been a faithful companion to me, all this while, the only true friend I have. Or, may, I say, the only witness to my thoughts - because there is no one else. Yes, I am the only person around in this world. Does this make me happy or sad, you ask? I am conflicted, to be honest. As an introvert, I always wanted solitude and peace. The ability to be myself, to not just think my own thoughts but act like no one was watching. And yet, now, when I really can do this (believe me, no one is watching me, or even the security tapes!), I long for a voice to hear and for someone to talk back to me, see me act stupid or act out my weirdest thoughts, and in general just listen to me. But, there is no one. And this scares me, as well. Why am I writing this down, when I rarely, if ever, read you back? It is, probably, with a hidden hope that someone some day will read it and understand my thoughts and ideas without judgement. If no one ever will read it, because there is no human left on planet Earth, why am I writing this even? I always read (and scoffed at) the books telling me "Man is a social animal" - I felt they did not refer or apply to me me. And now, dear friend, I have realised a little too late in life that it wasn't the books that did not recognise me. Rather, it was I who didn't understand myself. Farewell and adieu!