hell and morality of the creator

I want to start from the begining. I have heard people say many times that anihilation is better than eternal suffering I am trying to articulate my thoughts and feelings about anihilation. One part of me understands the statement, why anihilation is better than suffering but the other part does not understand it since anihilation is not exisntence, but absence of existence it can not be compared to neither happiness nor suffering. Can anyone present their thoughts about the subject?

Morality and concept of heaven

Heaven in christianity(catholic and orthodox) is not only beyond concept of morality, ethics but also immoral in some sense. Imagine a situation: you have killed a person, normal human being, who you surely know did not go to heaven, therefore is in hell, suffering, (imagine how great their suffering is, imagine it from christian perspective, (christ says that a second in hell is unbarable) )How can u even have a will of going to heaven, when u know that because of ur sin, crime someone is suffering for eternity. What would u do as christian? You would repent and try your best to go to heaven. does it sound immoral? of course it does and it is in some sense.