Ok so there's not much to say here other than...........
My theory is that Darwin's family is far away from him.......
But i don't know how.......my 3 guesses are:
The Sad Guess: His parents died
The Less Sad But Still Sad Guess: His parents disowned him because they hated him
The Least Saddest Guess: His parents got adopted and the people who adopted them couldn't afford Darwin.
I feel like the truest of them all could be the first guess