You don't really understand OOP until you recognize it as one style among many that you may use in different parts of each program. Some parts are naturally OO-y, others DD-y, others declarative, often an unholy mix in each place. The problem dictates elements of the solution. Shoehorning a solution into a particular style makes a bad solution.

Never forget who is in charge. Deferring to a style dodges responsibility for your choices.