Literally, the original meaning of this sentence should be more than that of wanting nothing. It may imply that a person's appearance is still very smooth, and the connotation may be gone. What he has lost should be some memories or feelings worthy of nostalgia. . "Why do you remember" may be a sad mood, meaning to let go. He (she) may have been depressed before he said such a thing. Who's in a good mood to say this? Right? ,,, personal understanding. . For reference only, I hope it will help you.