Human diplomats exist to compliment you one the hole in the dirt you've dug.
Elven diplomats exist to be laughed at for their ludicrous ideas of tree conservation, then thrown into the horrible, embarrassing pit of eternal disembowelment.
I just murder them for their sheer hypocrisy.
Tree-hugging Diplomat: Hey, could you please stop chopping down trees?
Urist McBeerLover: Um, why? This is our damn land.
Tree-hugging Diplomat: It's unethical. And besides, no one truly owns the land.
Urist McBeerLover: Look, Elf. Maybe we'll cut back a little, just so we don't have to hear your crap every year.
Tree-hugging Diplomat: Fine. We'll tolerate a small portion of your tree murdering. Just keep it to a minimum, it's disgusting. Now, I have to go. I'm hungry and there's a fresh goblin corpse right there.
Tree-hugging Merchant: Could you also please stop trying to sell us these tree-based items?
Urist McMerchant: Wait, why? We just agreed to cut down less trees, not all of them. They're already cut down, and the damage is done. Plus, the work is exquisite.
Tree-hugging Merchant: We don't care. You killed a tree to make that earring. Trees have feelings, and it's not right to desecrate them.
Urist McAnnoyedMerchant: Alright, well how about some crystal glass items?
Tree-hugging Merchant: That, too, uses wood when being made.
Urist McAnnoyedMerchant: How the? How would you even know that if you don't do it yourself?
Tree-hugging Merchant: That's um, none of your damn business.
Urist McAnnoyedMerchant: Next thing you know, you're going to be telling me that you won't buy soap from us.
Tree-hugging Merchant: Of course not, it's also made with--oh, I mean we uh-
Urist McAnnoyedMerchant: I knew it, you hippies don't bathe.
Tree-hugging Merchant: ...
Tree-hugging Merchant: ...
Tree-hugging Merchant: ...
Tree-hugging Merchant: Want to buy some wooden axes?
Urist McAnnoyedMerchant: I'm going to murder you with magma and make it look like an accident.