This question can be answered from the aspects of the convenience of travel, cost, quality of experience, and technological progress. It is possible to compare past and present ways of traveling, discuss the unique charm of past travel or the convenience of modern travel.

这个问题可以从旅行的便利性、成本、体验质量和技术进步等方面来回答。可以比较过去和现在的旅行方式，讨论过去旅行的独特魅力或现代旅行的便捷性。