Maybe you and yours do, but that mostly just makes you racist arseholes ^.^
I can live with that.

:P
Certainly in my games - If we meet a goblin on the road alone, travelling with a pack and heading towards a nearby town... we say hi, same as we would for anyone else.
Totally can imagine how our GM uses this against you, to lead you into some huge ambush.

//Edit:
Good point about goblin in a humanoid group.
I gues it depends on situation, doesnt it?
Let me present one alternative:
You are a Tiefling ... standing your guard on the wall abowe gate to certain druid grove ...
Now, sudently group of human adventurers run towards your gate ... you cant open them, since that is your leader order ... but luckily your leader i nearby and after some short exchange of opinions, he orders to open the gate so adventurers can hide, since there are Goblins chasing them ...
As your friend Kanon is opening the gate ... he is shot and dies ... then battle start, you are firing one arrow after another to those Goblins down there ...
*NOW*
Out of nowhere, group of Elf, Githyanki (wich you only see as some weird shit you never seen before, but you may remember that your another friend, Zoru, inside the camp described to you something simmilar as murderers of another friend of yours), Half-Elf wearing armor full of Shar symbols, and Goblin appears on the hill.
Do you really tell me that you would presume they are friendly?
