When he meets Wanda, Burns is intrigued. She is not the first to find sympathy with the humans - he is proof of that - but her case is still unique. She has been spared because she has formed a romantic relationship with one of these humans, something which no matter how dear he values his new human friends he cannot quite understand.
What does these humans know of other planets, of the centuries they have lived, of them?
But somehow that doesn't seem to matter with these people, and to be quite honest he likes it.
It makes Earth feel like home.