Cruise industry

Nothing is quite as extravagant or wasteful of resources as the modern cruise industry. The largest cruise ship has multiple pools and waterslides. They literally transport hundreds of gallons of water to swim in on a vehicle that sails on water. On top of that they probably have an entire warehouse of food consumed by guests. The food is pooped into the shit tanks on the vessel and either transported to be dumped in port or dumped at sea. All it does is burn fuel to do nothing more than entertain the first world while hauling all their consumables and excrement in a circle. Excess. Waste.