I'm not suggesting that hell should be focused on but I'm quite curious as to why it's considered irrelevant or non-existent in some cases. What is it about hell that makes people not want to even acknowledge or discuss it's existence?
Well a Nihilist will say that we'll never know and thus won't speak on the subject. Also when you get into the reason why you go to Heaven or Hell (which is morality) we get too subjective. Think of it like this.... It will sound tacky. Masochists enjoy pain that's inflicted upon them, if your consciousness follows you after death and you were "evil" and go to Hell where you are tortured is that really a punishment? Hell is no longer evil to them, or a place they wish to avoid.