I prefer flying to all modes of transportation. Some people may think that traveling by air is the most dangerous road around. They think that train protection and transportation are cheap. However, from my point of view, when we take the train, we exchange comfort and safety. Similarly, it is cheaper for us to exchange time, boat. This is a bit dangerous, because flying is more comfortable and faster. In this case, flying is my best choice.
I wrote it myself, O(∩_∩)O, I hope I can help you.