Initially, I also found it way too thin, so just seeing screenshots of it I didn't understand why it was so popular. But after trying it for myself, I ended up

Initially, I also found it way too thin, so just seeing screenshots of it I didn't understand why it was so popular. But after trying it for myself, I ended up really liking it, and have now been using it for almost half a year. If you use large fonts (my vision is not the best), and work on laptops (which don't have huge screens), Iosevka is thin enough to have two 80-char terminals open side-by-side. Secondly, I find it to be very legible. This is not always that noticeable in screenshots, but if you try skimming and navigating code using a new font, you see the difference. Finally, it is quite configurable, so you can pick a character style that you like (I like SS09).