You should try Japan Air Lines (JAL) or All Nippon Airways (ANA) for comparison. The difference is amazing. With those airlines, First/Business class actually

You should try Japan Air Lines (JAL) or All Nippon Airways (ANA) for comparison. The difference is amazing. With those airlines, First/Business class actually means something besides a slightly larger seat. With Delta, first class means spending the entire flight with the Coach passengers parading up and down the aisle on their way to the lavatories that are not supposed to be available to them. Another very noticeable difference is in the age, appearance, attitude, and demeanor of flight attendants.