Programmers spend all their working hours interacting with text. How the text is rendered on screen is arguably the most important aspect of their work, followe

Programmers spend all their working hours interacting with text. How the text is rendered on screen is arguably the most important aspect of their work, followed by a text editor, and programming language. If a certain font works for you, by all means keep using it. Just like nobody should tell you what editor to use, a font is also a matter of personal preference. That said, certain fonts have features that many find advantageous. I like that Iosevka is narrow, which means I can fit more text horizontally. Legibility and not having ambiguous symbols is also important. I also dislike ligatures, and want my font to be able to render multiple alphabets. But ultimately, I just like the way it looks. It renders nicely in all sizes and weights. All of these might be features your font choice also has, or you might not value some of these as much as me, which is perfectly fine.