IT'S YOUR FAULT, GOD

The gemara recounts a story about how they took a vote in the beis medrash on whether it wold have been better to have never been born. The majority agreed that while it may have been better for us to never have been born, now that we do exist, we should make the best of our lives. My Mashgiach Ruchani told us that someone once asked the Dubno Maggid the following question. If it is better for us not to have been born, why  don't we sin all we want, and after 120 years, tell God that it's his fault for creating us, so its his fault that we sinned, and he cant blame us for it? The Maggid answered with a parable. In a certain town, there was a deaf man who was extremely ugly. In the same town, there was also a blind woman who was extremely loud and would always nag. The community arranged that they should get married. She wold never see his ugly face, and he wouldn't hear her complaints. One day, a traveling doctor passed through the town. It was advertised that he could cure blindness and deafness. The couple decided to spend a large sum of money in  order to heal their impediments. The doctor healed them both, and they were extremely grateful. Later, when she saw his face, and he heard her nagging, they both started despise each other. They went back to the doctor and demanded a refund. The doctor agreed to refund them, on the condition that they allow their ailments to be restored. They protested started describing how they love the ability to see/hear the world around them. So too, said my Mashgiach, we can't tell God that we didn't want to have been born and that we demand a refund, unless we are actually willing to have our lack of life restored. My problem with this is that it is assur to commit suicide. So why  don't we tell God, "Look, I didn't want to be born, you wouldn't let  me kill myself so that i wouldn't have done any aveiros, so its your fault and you cant hold me responsible"?