Okay, dragon conflicts. Let me ramble a bit. The classic one is definitely territorial. A dragon's lair is its castle, and any knight or adventurer waltzing in is basically asking for a face full of fire. But it's not just about gold-hoarding; there's a weird sense of violation there. You see it in Smaug's utter contempt for the dwarves in 'The Hobbit'—it's personal.
Where it gets more interesting, for me, is when the conflict is environmental. Like, a fire dragon's mere presence scorches the land, or a frost wyrm causes an endless winter. The fight isn't just 'slay the beast,' it's 'restore the balance.' It turns the dragon into a force of nature, and the characters are trying to fix a natural disaster that happens to be sentient. That's a lot heavier than just a treasure hunt.
I also find the 'misunderstood guardian' trope popping up a lot lately. The dragon isn't the villain; it's protecting something ancient or dangerous, and the so-called heroes are the ones disturbing the peace. That flip always makes me question who I'm rooting for.
Sometimes the conflict is internal to the dragon, too. Think of a water dragon bound by an oath to protect a river, but a drought is killing its home. Does it break the oath to save its people? Those stories hit different.