[jyunwai]

Em and en dash usage is officially part of style guides such as The Chicago Manual of Style [1], so it's often a work requirement for many writers and editors to use them in writing. This is why these kinds of dashes are everywhere in newspaper and magazine articles.

Eventually, people learn to include them out of habit—especially as most people see them as aesthetically nicer than a simple hyphen (-).

[1] https://www.chicagomanualofstyle.org/qanda/data/faq/topics/H...

[bangaladore]

Exactly. If I see an Em/En dash in a publication of really any kind, I don't think twice. Because that's the traditional context for them. Professional writing.