While everybody can hear, they won't hear it anywhere near as loud. So you can listen to music as loud as you want without disturbing your neighbors or even the

While everybody can hear, they won't hear it anywhere near as loud. So you can listen to music as loud as you want without disturbing your neighbors or even the people in the next room. Secondly, you arguably get more bang for your buck. For a budget of say $300-400 split between open headphones and a DAC you'll get much better sound quality than similar money spent on speakers and an amp. Finally to get the most out of speakers you need space to set them up correctly and a room with decent acoustics. Headphones avoid all of that.