[cm2012]

A certain portion of people just prefer learning from video instead of text.

[Apocryphon]

And audio. This also explains the popularity of podcasts, the descendants of a century or so of radio shows.

[brlewis]

I thought the explanation for podcasts was people who drive to and from work, and don't care for current radio shows.

[krapht]

More than just your commute. Any downtime where you are doing a mindless chore is prime podcast time.

[ghaff]

Personally, I don't care for podcasts much around the house. I listen to them much less now that I don't commute.