Punishment for Off the Derech
Question
What is the view in the eyes of Hashem of Jews who are raised orthodox and then go off the derech? How does Hashem typically punish those who do? Is the punishment severe? Are they denied a portion in Olam Haba for doing so?
Is one who goes off the derech and later returns, either fully or partially, still punished severely for the time they spent off the derech?
About half of diaspora Jews who are raised orthodox eventually do go off the derech. So does The All Merciful G-d really bring suffering upon 50% of those raised as Orthodox Jews just because they go off the derech?