Sadly this is something that needs to be said in 2017. The Galaxy S8 and Galaxy S8+ have a headphone jack. Which is more than we can say about the iPhone 7.
So what can you do with that, well, listen to music. A headphone jack is extremely important, not to mention owners can listen to music with their favorite headphones while they recharge the phone at the exact same time with the USB port. On other phones from Motorola, HTC or Apple, there is no 3.5mm headphone jack. Meaning the USB port does everything, and can't be used at the same time.
This is a feature worth having.