When you spend most of your day staring at text on a screen, the minutia of how that text looks like become very important.

The centuries-old artistry of mass reproduction of thought has many wonderful minutiae!, as high technology often does.

It has just the right balance of technology, art, history, and trivia fun facts. Makes it one of the best topics for us nerds.

Also, programmers spend a huge fraction of their time reading. Reading code, reading docs, reading reading reading. Fonts are important for us from an ergonomic point of view (and it's also a matter of taste and aesthetics!)

Agreed, same reason the Monaspace font 1.1 release made news: https://news.ycombinator.com/item?id=40267120