what was the point of this war for the westerners? why did the europeans attacked turkey knowing they wouldnt get anything? i can understand greece and armenia but what about the others? also even though turkey didnt fought properly they still gave our lands back and left us alone. why is that?
They did not know they wouldn't get anything. Remember, they did successfully claim large portions of the Ottoman Empire south of Turkey, and Greece was awarded portions of Ottoman territory as well. With the collapse of the Ottoman Empire, it was very much a land grab by the Great Powers.
In the end, however, Turkish resistance proved stiff enough that the Entente was forced to withdraw due to political pressure back home. Remember, the Great War had just ended, and among almost everyone there was a desire for peace. Pierre Berton's Marching as to War has an interesting section that talks about the political turmoil in Canada that erupted when Canadian soldiers were briefly deployed to fight on the side of the British during the intervention in Turkey.