“A God who could make good children as easily a bad, yet preferred to make bad ones; who could have made every one of them happy, yet never made a single happy one; who made them prize their bitter life, yet stingily cut it short; who gave his angels eternal happiness unearned, yet required his other children to earn it; who gave his angels painless lives, yet cursed his other children with biting miseries and maladies of mind and body; who mouths justice, and invented hell—mouths mercy, and invented hell—mouths Golden Rules and forgiveness multiplied by seventy times seven, and invented hell; who mouths morals to other people, and has none himself; who frowns upon crimes, yet commits them all; who created man without invitation, then tries to shuffle the responsibility for man’s acts upon man, instead of honorably placing it where it belongs, upon himself; and finally, with altogether divine obtuseness, invites his poor abused slave to worship him!”
-- Mark Twain, The Mysterious Stranger
Aside from the clear flaws in xian thought it still begs the question why there are problems in the world, and why create anyway? why have prefrence for your mortals leading a good life? Why exist in the first place? (that goes for the universe too) strong anthropic principle?