How did the childhood experiences of Siddhartha Guatama (Buddha) lead to his questioning of the spiritual practices of his time?

2 answers

There seem to be several versions of his childhood. Most seem to be myths not related to historical facts.
Living a life of luxury as a child, made him question the extreme poverty he saw as an adult.

http://en.wikipedia.org/wiki/Gautama_Buddha#Early_life_and_marriage

http://buddhism.about.com/od/lifeofthebuddha/a/buddhalife.htm

http://www.buzzle.com/articles/siddhartha-gautama-the-buddha.html