I use them to listen to audiobooks, music, videos, take calls, all the things you use them for. But I also use them to cancel out most sounds when I get overstimulated (am anxious and autistic) and also use them at concerts as I get overstimulated in loud environments but love concerts for the vibes.
I agree with the other reviewee about the constant 'battery low' warning when you get to 15%. Very annoying indeed.