Four questions for Christians

[Consilius]

the fear of death need not exist.

I agree. I am perfectly fine with knowing that there is nothing after I die. That is the difference between me and you. I do not need to rely upon religion to ensure a peace of mind while I am alive in regards to what awaits after death. Those who truly fear the unknown, not knowing what awaits after death, have created for themselves an afterlife where their existence continues. Theists fear death, plain and simple. Fear is, in fact, one of the driving forces behind faith. The other is comfort, comfort in knowing that something awaits after death.

Fear and comfort are the theist's best friends in the face of rationality. Sadly.

I don't know there is an afterlife: I believe in one.
As an actual theist, I would like to say that I am not "afraid" of anything. The only reason I would have the "fear of Hell" you are trying to describe would be if I thought I deserved an eternity without God by my own standards. Being concerned about my actions in itself is enough reason I wouldn't need to have this fear in the first place.
The love Christianity prescribes is meant to dispel fear and not manipulate it. Those aren't my own words.
"There is no fear in love. But perfect love drives out fear, because fear has to do with punishment. The one who fears is not made perfect in love." 1 John 4:18