It's a way to keep doing all of the bad habits you learned from completely unstructured procedural code, including global state, but in a way which is marginally more encapsulated and therefore more likely to last longer than six months in the field, and might even survive maintenance.

It adds to this all of the extra oddness that object hierarchies bring, especially the oddness related to trying to force non-hierarchical concepts into a hierarchy. Mediate on whether an ellipse is a special case of a circle or vice-versa until you reach enlightenment, which is realizing that the question is stupid and that any situation which forces you to answer it is stupid.