WHO NEEDS TRANSCRIPTION?
Here are just a few ideas:
Why? Because having a written transcript allows SEO (search engine optimization) to find your material more quickly so that your audience will grow!
Why? Because sometimes people want to read what you have to say rather than listen. Maybe it's more convenient to read, the headphones got lost, or it's easier to take notes while reading!
Why? Because having a transcript of the treatment you provided, the interview you conducted, or the lecture you attended might be mandatory for your records, allow for better research analysis, or help you pass the test!