Under most of the worlds religions we’re pawns of God here to follow his rules, or do his Earthly bidding. If we’re good then we get to float about the clouds of Heaven basking within his holy light or end up on some Earthly Amish style paradise. Most of the religions ultimately preach that our future lies in the stagnation of a mindlessly boring paradise where God is the perpetual King over us, or the Father who won’t let his children grow up. That makes us mindless slave like creations rather than real children of God.
If God is indeed good, and cares about us then he would want us to grow up, and at least be somewhere near his equals. Perhaps this isn’t possible in actual power, especially if we’re talking about the original eternal God that composes all the Macroverse. However this should be the case if we’re talking about a God of our Omniverse who may have once been a biological being such as ourselves who ascended to Godhood. True children of God would indeed grow from adulthood to Godhood in death by the creation of a powerful intellect through the near infinite lives we’ve led in the near infinite parallel Universes of this Multiverse, and perhaps in others as well. The wealth of knowledge, and experiences would indeed prepare us to be Gods, and create our own Universes, and sentient beings.
Sure the idea of a perfect paradise with a big God figure protecting us is reassuring but it would get monotonous, and would be unfulfilling to live out eternity that way. After a thousand years or less you’d want something more. In the same way a child in their late teens kept from growing up by overprotective parents would rightly rebel. If we are more than entertaining creations of God then we would be afforded the right to grow into Gods just as our Heavenly Father has. Certainly this life, and all other lives we’ve led would be pointless if we are not allowed to ascend to something greater, and to follow our fundamental right of free will as humans, and sentient beings in this Universe. So if goodness ultimately rules over our reality then our ascension to Godhood is virtually assured if we are judged to be good in the majority of our lives.