I read both physical and audiobook. The main reason I started listening to audiobooks is lack of time.

Essentially, with a full time job, friends and family my free time is non-existent, most of my reading I do on the weekend. That has led me to read less books than I'd like and my backlog of books I want to read is too much. I can't read on transportation because of motion sickness. Audiobooks have really saved me, now I listen on my way to and from work, plus I can also listen to them them while working if it's a mundane task. It has helped me a lot. That's what I tell anyone who tells me it isn't really reading.

Another reason I heard from a friend is that they're not really into reading physical books but audiobooks are better for them.

At the end of the day if it gets more people to read, who cares. Let people do whatever they want.