For sure, God is not abusive. But only those who reach His closeness can bear witness to His generosity, and His generosity knows no limits. But others don't and will not in the future life know about this. God does not give just like that. It comes with due striving and diligence.
You sure seem to know all about God. You want to teach us but you have picked the worst, false prophet in history as your greatest man. To me there is no doubt Muhammad was a liar and a bandit.
See my thread 'spiritual teachings' for alternative roads to God, including Buddhism which does not mention God, but in my view is a truly spiritual way of life.