The main reason the german government signed the treaty of versailles was that

. The Germans did not like the treaty of Versailles because one of the clause within the treaty mentioned the Germans to be responsible for causing the war and so they had to make territorial concessions as a fine for that. The Germans still signed the treaty as they were afraid of an attack by the allied forces.
-studysoup.com

The main reason the German government signed the Treaty of Versailles was that they thought the treaty was the only way to secure world peace. they could not afford to pay the high fines imposed by not signing. they believed that signing would keep them from paying restitution. they feared the threat of an attack by the Allied forces.

*Or in a easy statement is that to end ww1*