An aside, but can someone explain to me the use or utility of ligatures? To be frank people who use them seem like those who change their i3 layout every few mo

An aside, but can someone explain to me the use or utility of ligatures? To be frank people who use them seem like those who change their i3 layout every few months, they seem/feel like a gimmick to me. I hope that isn't too harsh, perhaps I can be convinced they have use. Ligatures remind me of the symbols in APL. There, I can see sort of a use if your language requires it but generally in the terminal? I don't get it.