This was the conversation between Bug and I today.
Bug--When is Munchkin going to come home? (Said with much sadness)
Me--I just don't know, Honey.
Bug--Well, we've known about him since I was 4 years old.
Complete pause from me and after a few minutes of thinking.....
Bug was right. He was a few months away from being 5 when we first found our son. Bug is now a few months over 6.
I would love to be able to answer his question.