I'm not a fan of ligatures. Don't like the idea to not have a source of truth when reading code/text. Text should be pure, I find that ligatures obscure intention when I read code. I've tried using them, but they just look weird to me and I have to stop my reading flow and reason about a given ligature. I'm pretty sure it's just habit, but I never pushed myself to use them for long time, never felt the need to train myself.