Editor's note: We all have that one friend who anxiously waits for Pumpkin Spice Latte season, posts about it way too much, and gets depressed when it’s over. The prime culprit here? Cinnamon. While it’s not sweet in and of itself, cinnamon enhances the sweetness of whatever you put it in, so it’s a wonderful addition to baked goods and drives young American girls wild every autumn. But they’re in good company: the spice has been popular since at least 3000 BC. Get on board with some fun Cinnamon wallpapers!