The part that's the worst isn't being on the plane. It's going to and being at the airport. First class doesn't fix the god awful experience that is flying.
There are plenty of ways to make the airport part more pleasant with more money. Priority check-in desks and security mean you don't need to get to the airport as early just in case, it will be consistently fast. Priority boarding removes the need to queue. Leaving first probably means shorter queues at immigration. Lounges are much more pleasant to wait at than the general access areas. Does first class baggage also get offloaded first?
