求翻译：原谅我的突发奇想用英语给你写封信。其实说实话，有的时候你永远不会知道有些人对你多么重要直到离开。你总是说我对一切都无所谓，我只是知道该如何更好的保护我自己。我明白，正是因为我没有避难所，所以我才必须让我自己变得更加坚强，抛弃这个社会无法忍受的脆弱，是什么意思？

Forgive my whim to give you a letter in English. In fact, to be honest, sometimes you never know some people how important it is until you leave. You always say everything, I do not care, I just know how to better protect myself. I understand that, precisely because I did not have a shelter, so I mu