Yes. Earphones are really useful. In as much as we want to use speakers to clearly listen to music, more often than not, earphones are the good way to go, especially when we are outside or we are with people who are not fond of the music we like to listen to.
Personally, I use earphones whenever I want to shut the world and just be with myself. I often just lie down and listen to my playlist whenever I'm feeling down or empty or whenever I'm in dire need of motivation. Wearing earphones also provide the privacy or the personal space we need whether in our home or in our office. It allows us to seek comfort amidst all the chaos. In fact, according to some researches, this actually drives productivity, as it helps us gain more focus on what we are doing and keeps us out of the distractions brought about by our surrounding.