There are lots of post WWI villains, including Wilson, the French and the English. There is a very good argument to be made that Stalin had a great deal to do with the mess as well.
The US always followed a policy of generosity since it was the most intelligent thing to do. The Marshall plan i.e. paid out a thousand times and provided peace and happiness for a long time. The legacy of this generosity lives on since Europeans like me still identify the US with being something "good". :)