Choosing good design patterns is essentially choosing best practices. Not all design patterns fit every purpose, but for many scenarios, they'll make your life easier. Perhaps you may not notice any difference in the beginning, but you should in the long-term.

Good design patterns also have indirect advantages. You'll find more documentation and examples online, as well as a broader set of options to choose from, for example, when using the Publish-Subscribe pattern, where you'll find many types of implementations to integrate with your services.

Choosing the pattern that fits your needs also involves planning and knowing what you need and what you'll need in the future. Think of the edge cases and see if the pattern is capable of handling them.