If our familial relationships are meaningless in heaven, it makes no sense why they should be of consequence on Earth. What good is a 60-90 year blip in the real world versus trillions of years in eternity. None of that even comes close to resembling reason, truth, or justice in any rational sense.
It sounds a lot more like Brave New World, where soma helps everyone forget all of their worries and sorrows.
The more you describe it, the more the anti-theists make sense.
If the Bible is true, all our desires for relationships are nothing but earthly version of an ultimate desire for relationship with God. In heaven, this apparent conflict will be reconciled.
If the Bible is true, all things of this world will go away. The only way this can be said to be devoid of reason is if we refuse to see it other than through the lenses of the world.
It doesn’t seem to make sense only if we expect things to be as we would have them.
The only way it wouldn’t come close to resembling reason, truth, or justice in any rational sense is if we were the authors of reality.
But we’re not, we’re merely participants. In some cases, this is probably the most difficult truth to accept—the greatest barrier.