Predisposition toward organizing information in a hierarchical manner?
This is not out of desire, it is out of necessity of abiding a feature of information and knowledge itself. Quite frankly, this goes into a bit of data science and information theory (I personally learned of this through data visualization. Nonetheless, I still think it is a relevant question).

According to Richard Wurman in his book, Information Anxiety, “information may be infinite, however… the organization [or structuring] of information is finite.” Furthermore, “Each vantage point, each mode of organization will create a new structure. And each new structure will enable you to see a different meaning, acting as a new method of classification from which the whole can be grasped and understood.”

The three main ways of organizing information are as follows (please note that those within parenthesis are my personal examples, the rest are more main/established ones):  


Location  
Categorical
a. (similarity/relatedness)
b. (problem/solution)
c. (cause/effect)
Hierarchical
a. Alphabetical
b. Time
c. (deductive/inductive order)
d. (importance)
e. (simplicity/complexity)  


In relevance to hierarchical information and psychology though, it is worthwhile to note that both foundations of language and logic are found through the alphabetical category. These, in turn, are fundamental features of the human mind and are, in large part, also means through which the mind makes connections. Also, tendencies towards hierarchical information could also be explained through using time as an anchor to which to describe things in relation to such as the past, present, and future.