And it's a way to communicate how you feel that about this possibility is not existing for you.

当你想谈论一些不会在你身上发生的事情时，你可以用“If I were”句型来跟人交流。

If I were 课堂 - SpeakingMax英语口语达人

Is there any way to imagine existing forever ? where that would be good for you,forever?

有没有想象永远存在的办法,永生对于你来说是好事吗？

耶鲁公开课 - 死亡课程节选