I listen at 1.3 speed, and I often use the rewind button, which goes back 15 seconds, if I miss something. I can exercise, drive and do mundane household chores like laundry and dusting while listening to audiobooks, but not much else. I need to pay attention.

Listening to normal speed is just way too slow for me. Feels like the book is crawling. It has nothing to do with finishing the book faster, the faster speed simply sounds more natural to the way I read.