You must remember that it would be dangerous to live nothing but a quiet and peaceful life. You wouldn't recognize the causes you have made that are negatively affecting your life. Serious disease is hard to recognize until you realize something is wrong with your body. But by that time it may be to late. Hell is very deep.
People fall into it over a long period of time almost like an eternity.
In this passage things seem to go very smoothly for icchantica they don't see many obstacles. They are persons under an illusion thinking nothing negative is happening. This will stop you from falling into Hell. However, the shock of breaking the fall will seem harsh and abrupt. Certainly, it is less harsh than reaching the state of Hell.