Try not using prototype or class in JavaScript for a while, and you will do just fine without them. If there's a paradigm, or best practice, and you want to learn, don't follow it and see what happens.
I've only worked on one application written without any OO patterns, completely procedural, and it was a complete mess.
Adding or extending features caused cascading bugs. Eventually we had to rewrite the backend (PHP) into MVC to be productive. I quit because I dreaded the work. I didn't want to write another line.
I have been pretty interested in functional programming lately, or the functional paradigm everyone in JS is following nowadays, but haven't gotten the chance to take a deep dive yet.