Since all gods are myths your question is moot.

You seem to be only aware of one of the many.

gods exist but hell does not.

How is eternal torture "just" for anything? Why are we all evil because a woman ate a piece of magical fruit after listening to a talking snake? Why do I need Jesus for an imaginary concept like "sin". I don't accept that sin exists. So to say Jesus "died for my sins" doesn't make sense. Not only is eternal torture unfair for a finite life, but its down right psychotic. As a rational person I can't accept we deserve eternal torture over some fruit. I think Christians are scared because they know how ridiculous Christianity is. That is why people like Ken Ham try so hard to support Genesis. Without Genesis and orginal sin, Jesus is meaningless. 

Under that assumption then yes, I consider it unfair.

Why would I even begin assuming a god thing exists if there is no verifiable evidence?

Would I even begin assuming pixies, or monsters under the bed exist if there is no verifiable evidence?

Would I even begin assuming the Norse gods like Odin and Thor exist if there is no verifiable evidence?

Of course not - it's a ludicrous proposition.

Anyway, if such a critter existed he made it all the way it is cos nothing could happen without his having known about it before any thing ever started cos he's the Alpha and Omega, yeah?

We'd all be just a part of his diabolical game.

Free will wouldn't actually exist...

Not that it does in any case 😎

~

Atheism is the lack of evidence/belief in GOD God or gods.