This could be down to laziness, the cost of going out or simply not wanting too much personal contact with friends and family but just enough to swap brief messages and online chats。 It all adds up.

这可能是因为懒惰或是舍不得外出的花费，也可能仅仅是因为不想跟朋友和家人有太多面对面接触，认为简单发送几条信息或网上聊聊天就足够了。