I just realised something: In CoS, Tom Riddle may very well have had excellent reasoning, way beyond feeling more at home at Hogwarts, for not wanting to return to the orphanage for the summer. This was in 1943, and if it was before the bombings temporarily ceased in June, London wouldn't exactly be considered the safest place in the UK.
Author's Response: Yes, I've thought about how horrible the war time must have been for Tom ... I intend to write a story about that - as soon as I've finished one of my stories.