Am I a pessimist?

When asked "Do you see the gl half empty or half full?" I say half empty. I say this because seeing the gl half empty reminds me of the pain,rage,sadness,anger and bitterness of the world, but then I get reminded what is in the gl as standing for the love,happiness,caring,peaceful, and kind things the world has to offer, and then I become happy. So do you think I am a pessimist?