Its hard to believe someones gone, but realistically they are just gone from a place where evil is.
Ever think about how cruel this world is? How much evil is here?

Really, he just moved to somewhere really enjoyable and we no longer have to worry.

He lives on in our hearts and we can still hear our conversations. We can even hear conversations that have not occurred.

Seeing and hearing him in our sleep is his way of coming back for a visit.