“According to a study conducted by Common Sense Advisory, 75 percent of participating consumers stated they prefer to buy products in their native language, and 60 percent claimed they rarely or never bought from English-only web sites.”
Transcripts make audio and video available to the Deaf and hard-of-hearing.
With the text available on your site, Google and other search engines will promote your podcast in the search results more heavily.
Sometimes we’re not as clear as we hope to be. Providing a transcript for your listeners ensures they can go back through your work after or while they listen.