For the price difference you could order a box of Dom to the hotel at the destination ;-)

My travel has mostly been in J and I keep struggling if and when F would make sense. More space is one thing but it's still a damn aluminium tube, better bed maybe but it's still a huge difference to the one at home, food is better but it's still airline food and restaurants can do it better. The biggest difference seems to come from the airports and airlines, some places and companies just do it better but some get very close with their J products as well.

From the recent AONEx planning I noticed that planning for F is damn difficult today, many routes don't have it, domestic F in the US is like Premium Economy, and many airlines barely have any F left.