I think this song is about being stuck in a moment and wondering what you're leaving behind, sacrificing, by moving on. But the conclusion drawn is that the moment this person is in is meaningless, it's just about remembering, not making new memories. And in that moment, that person is alone, and without the things they remember loving so much. They know that by leaving the past behind they can never get it back, but any moment is better than the one that person is in, because they don't have anything. But that also means they don't have anything or lose.
I think this song is about being stuck in a moment and wondering what you're leaving behind, sacrificing, by moving on. But the conclusion drawn is that the moment this person is in is meaningless, it's just about remembering, not making new memories. And in that moment, that person is alone, and without the things they remember loving so much. They know that by leaving the past behind they can never get it back, but any moment is better than the one that person is in, because they don't have anything. But that also means they don't have anything or lose.