I think sending a message is just more convenient for most people. You can send a quick text without having to stop what you're doing. Also, the other person can reply when they have time, so you don't have to worry about bothering them if they're busy. It's also handy if you're in a noisy place or somewhere really quiet, like a library.
我认为发送消息对大多数人来说更方便。你可以快速发一条短信,而不必停下手头的事情。此外,对方可以在有时间的时候回复,所以如果他们很忙,你也不必担心打扰到他们。如果你在嘈杂的地方或非常安静的地方,比如图书馆,这也很方便。