In today's society, people write things everywhere and about almost everything. People write books on paper and on the computer, people write notes on index cards and post-its, and people write on buildings when they want to express themselves. However, a world without writing would be a completely different world. We would lack technology, we would have a lot less music, we would have nearly no stories relative to what we have today, and we would have to remember things a lot more. Keep in mind that writing does not include all kinds of communication or passing on ideas, oral tradition would still be practiced.
Without writing, people would not be able to write down ideas and these ideas would be soon forgotten. With the ideas forgotten many great inventions would not have been created, or would have taken many more centuries to create. This delay in technology would have increased exponentially with the time between each invention being greater than the last. In fact, many inventions would not have been important without writing, like paper, pencils, pens, erasers, and many other school supply items.
Without writing, we would have nearly no music, and if we did, it would have very few if any words. In order to memorize songs without writing is almost impossible when compared to memorizing it by reading it over and over again. The same goes for stories and poems. Oral traditions would successfully pass down certain stories and songs, but very few people would take the time to memorize them, and eventually they would be forgotten. So nearly all of the books and songs we listen to today would never existed. Also, books and songs that were created would have needed to have some significance or else people would not take the time to memorize them for very long.
Lastly, everything that we know today would have needed to be memorized by those before us. All of the mathematical equations, the scientific breakthroughs, the historical discoveries, and everything else, people would have needed to memorize. There would be no Quizlet, no Google, no Blogger, and no books. School would be harder for students, if there was school, and the teachers would have to memorize so much information and devote so much of their life to memorizing so many things that there would be nearly no teachers to teach the students.
All in all, our life today would be worse without writing. There are nearly no benefits for humans to not having writing. Without writing, our culture would be totally different, it would lack thousands of things we take for granted today. Without writing students would have to actually study for tests and exams, there would be nearly no tests, and there would be a lack of teachers in the school system. However, after all of this, there is one benefit that I can think of to not have writing, but it doesn't benefit humans directly. The benefit is the earth would be healthier, we would have no cars, no man made toxins, a lot less trash, and a lot less waste in general. All in all, the world would be a better place without writing, just not for humans.