Originally Posted by mshafrir
But there are different fares that are refundable. For example, V with United is fully refundable, so why buy an M fare? It just seems like some fares don't really serve a purpose besides being more expensive.
Because just as Analise said... upgradeability. For example, ORD-PEK on UA, if I want to use 30k miles to upgrade to the C cabin from the Y cabin on the way out, I need to have an H or M fare.