Hardly anything that requires time and / or energy is done without either purpose or love.
According to the previous statement, we can conclude that hyperbole (defined by some as a fancy word for deliberate exaggeration), has its purpose, the creator of it has his/her goal, and the core of it has the power to affect perception, understanding, point of view.
Even if somebody does it simply "out of love", because maybe he/she likes exaggerating, the hyperbole is still with a goal, purpose and a target.
The last time I discussed theory and technicalities I only presented a vague and relative description of the purposes of exaggeration, and said I will be open to interpretations. However, now I am going to list several uses of hyperbole. This is not a list I've copied from a definition, or that I've seen on a literature site. It is a mix of all I could think of so far. It may be edited in the future if I come upon other versions or figure out other uses that I have skipped or forgotten.
- To show great level / extent of something;
- To grab attention;
- To present obvious facts in a mocking manner;
- To be sarcastic;
- To emphasize / to point out / to put accent on;
- To show something more clearly;
- To create vivid descriptions;
- To increase effects of description;
- To create a comical / dramatic / ironic effect;
- For marketing / advertising;
It is very likely that I reference this list when I comment on specific examples, so please have the aforementioned points in mind.