I think I think positively, but I don't exactly perceive the world around me as friendly. That does not mean I have a dismal outlook, though.
I see the world around me as an intriguing and curiously delightful place - full of beauty in strange places and puzzling phenomena with surprising explanations - all resting upon an intricate balance of chaos and order - chaos in order, order in chaos, and so on into infinite rational absurdity.
So . . . no, "friendly" is not the word I would choose. Fortunately, inquiry and discovery bring me more happiness than friendliness.