Firstly, I wish to ask all to be aware that applying anthropological terms to God might be the best we can do, but it doesn't begin to really describe God, imo. He just doesn't compare to mankind.
The Bible answers all the questions, imo. If all I had to do was to find the references and explain them more fully, I would do so. I hope that I will get a break from IRL stuff to begin to do this for us here.
Some of the questioning returns us to the fact that the sin of the father passes down to the children. After Adam and Eve went against God's wishes, there was sin in the world. True, God sent His Son to pay for those sins so we may enter heaven, but it doesn't change how the sin has changed our lives and bodies. Before the "fall" we had perfect bodies and lives... made in the image of God himself (being triune, perfect etc) But God gave Adam and Eve freewill. He could have prevented them from eating of the tree of good and evil. But what would that have given him? Only more "animals" to obey him without question, without love, merely rotely. God wanted more than that from us... and He still does. His solution to preventing Adam and Eve (and the generations to follow) from being forever/permanently stuck in that sinful state was to remove them from the tree of life. He removed them from that garden. Life is hard because of the original sin, and our subsequent sinning. No way around this.
In the scope of things, our life here, in fact all of life so far has been but a very short time in God's "mind." For a day is as a thousand years, and a thousand years as a day. This is more understandable when you study quantum physics... it was not even approachable before that I think... with a few exceptions imo. (well, Einstein for sure...)
He sent His Son to cover the mistakes and sins, so we didn't have to be eternally damned. But, again, the evidence of sin - the original sin in our body- still causes the disease and problems. I am NOT saying that someone is ill because of some personal sin and if they give it up they will be healed. This is all in the general scope of things in God's plans....
We were created to Worship God. We are here to praise and adore Him. Now, I know that's a tough thing to accept when someone isn't even believing in Him, or when they find He isn't the center of their life. But the reason we ARE is for Him. He created us for Him.
...there's more... later