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For me it's primarily the environmental concerns that will see me taking the train to Italy next time, rather than flying, but I think the amount of uncomfortable bike lugging might actually be less, as the distance you cover in an airport is pretty ridiculous, plus less meticulous packing and worrying about damage, and the ability to take another suitcase rather than having to jam everything into the bag, which will make it much easier to haul. Plus I like train journeys
Because the environment, you monster.
Also flying with a bike fucking sucks.