It might be.
To me, it is just not very obvious that this is what a God with such power would be interested in. If God simply finds enjoyment in us enjoying life, there would be no need for suffering as life for a lot of people is not an enjoyment or have more bad times than good.
Good reasoning. God wants us to partake of the good things in the world, as long as they are allowed under His Laws:
“Should a man wish to adorn himself with the ornaments of the earth, to wear its apparels, or partake of the benefits it can bestow, no harm can befall him, if he alloweth nothing whatever to intervene between him and God, for God hath ordained every good thing, whether created in the heavens or in the earth, for such of His servants as truly believe in Him. Eat ye, O people, of the good things which God hath allowed you, and deprive not yourselves from His wondrous bounties. Render thanks and praise unto Him, and be of them that are truly thankful.”
But as you said, for a lot of people life in this world is not very enjoyable since they have more bad times than good. Since God created this world knowing people would suffer that means that God intended for people to suffering to exist alongside the joys of this life.
If by forever you are referring to eternal life, then I think you run into issues with people that have suffered in this life and how they are going to cope in the afterlife. If it is as the bible says that there will be no suffering, then our current existence is pointless and is purely for the entertainment of God.
From what I can see, there is no way one can make these things fit together without ending up with them being contradictive.
I can make them fit together.
People who have suffered in this life will not continue to suffer in the afterlife since the causes of suffering that exist in this life will not exist in the afterlife. Since the next life is a spiritual world and not a material world, there will be no need to struggle to make a living, and there will be no accidents or injuries or diseases. The only suffering we might experience is the suffering of the soul, not the body. The soul might suffer if it does not have the spiritual qualities that are necessary to exist and be happy in the spiritual world. The reason we have to suffer in this life is to acquire those spiritual qualities.
Our current existence is not entertainment for God, it is for us to acquire perfections. Another reason for suffering is so we will cry out to God for help!
“While a man is happy he may forget his God; but when grief comes and sorrows overwhelm him, then will he remember his Father who is in Heaven, and who is able to deliver him from his humiliations.
Men who suffer not, attain no perfection. The plant most pruned by the gardeners is that one which, when the summer comes, will have the most beautiful blossoms and the most abundant fruit.
The labourer cuts up the earth with his plough, and from that earth comes the rich and plentiful harvest. The more a man is chastened, the greater is the harvest of spiritual virtues shown forth by him. A soldier is no good General until he has been in the front of the fiercest battle and has received the deepest wounds.”
Paris Talks, pp. 50-51