In another thread, it was suggested that suffering is a result of past sins. While I have no concept of "sin" in my worldview, I see suffering as a result of attachment and desire.
In your view, from where does suffering come?
Like the Marine Corps, God didn't promise a rose garden. Or, if he did, it had thorns.
This isn't heaven. This is the line where you wait your turn to get into heaven, and you can earn credits for heaven while waiting in line. Along the way is heart ache and sorrow, and no respite from the almighty who has doomed us to this fate (still exacting paying for the sins in the Garden of Eden?).
While some believe that sin is the cause of suffering, sin is really a pass to hell. Sinful rich folks who denude God's nature to earn a buck (fracking, drilling and burning oil, mining without fixing the mess left behind), will find their ticket stamped and post paid.
Do the rich suffer on earth? It wouldn't appear that they do, nor do their cute young girlfriends. If sin is the cause of suffering, why don't these rich folks appear to be suffering?
Most charities give nothing to to the poor (or very little). They keep it all for themselves. The recent Wounded Warrior Project debacle (RE: Colorado luxury resorts) exemplifies the problem. Do you see any of them suffering?
Opisthognathous senators, too weak willed to oppose their masters (not Gods), cave to public pressure and mammon. Do you see any of them suffering?
If it is true that God is all mighty and all knowing, why does he not answer prayers or relieve suffering?
Cancer patients have not sinned to get their suffering (unless you count original sin of being born a human being, and taking on the burdens of mankind from time immemorial).
Sins have a way of biting us. That is, pollute the environment, deal with the pollution. Cheat on your wife, deal with a cheated and bitter wife. Sins doom us on earth as much as in heaven.
We think of God as loving, but all that we see of God belies that.