Doesn't seem like justice to me in any conceivable or reasonable sense.
There's no rational reason that there needs to be eternal cosmic justice, and no evidence for it either. There's also no evidence for the mind existing after the brain is dead. Mind/body dualism has effectively been debunked.
Tell that to the atheists who believe in life after death because they’ve examined instances where people “come back” with knowledge they had no way of acquiring if their mind/soul was exclusively bound to their body on an operating table.
There’s no RATIONAL reason for a lot of things that still exist. Heck, there’s no RATIONAL reason for ANYTHING to exist. What is the scientific/rational reason for anything in this universe to exist? What is the first “cause” - or does the source/reason for everything that exists have to come from something eternal?
If a person has tasted the good and hates it, what difference does it make whether the evidence of that is over a 90-year period, or over a 5,000-year period? And what more can be done with those who hate the good than to isolate them in their own corner and let them enjoy each other forever? The Islamists can have their “Paradise” where they get to rape virgins forever and be as selfish, loveless, and scummy as they ever wished they could be here on earth. Give them their own place where there’s none of this “love” stuff to stop them. It’s called Hell to us, Paradise to them.
For those who are just “part bad” - love some, hate some, don’t believe in much - they need to shop around and figure out what creates love, if they want their eternity to have love in it. Scientifically speaking, where does love come from? Do you find it in your test tubes and chemical tests?
You don’t like God and don’t seem to be interested in being in a place where love, joy, peace, forgiveness, hope, etc dwell. Fine. That’s your choice. You will be rewarded with exactly what you seek. Enjoy it.
Just know that it may not be what you thought it would be. As annoying as you find Christians here and now in our un-perfected state, it’s a whole nother thing when the alternative is to share a room with Joe Stalin, Adolf Hitler, or others who have no reason to treat you any differently than a toy for their amusement. Real evil exists, and it very often has a lot of RATIONALIZATIONS for why it can’t be evil because evil doesn’t rationally exist.