Why did Charles-Maurice de Talleyrand enter the church instead of the army?

Charles-Maurice de Talleyrand entered the church primarily because a physical disability prevented him from pursuing the traditional military career expected of his aristocratic family.1

Talleyrand suffered from a clubfoot—which may have been congenital or the result of a childhood accident—that rendered him unfit for military service. Consequently, his parents directed him toward an ecclesiastical path. Although he was initially exposed to the luxurious lifestyle of high-ranking church officials to encourage his interest, his time at the seminary of Saint-Sulpice also fostered his intellectual development, where he engaged with the works of contemporary Philosophes and began his political education.1