Final answer:
Poison gas was considered worse than traditional weapons due to its devastating effects and indiscriminate nature. It caused excruciating pain, permanent injuries, and could affect both soldiers and civilians. Its ability to reach the trenches and low-lying areas made it more challenging to avoid.
Step-by-step explanation:
Poison gas was considered to be worse than traditional weapons like tanks, guns, and artillery due to its devastating effects on the human body and its indiscriminate nature. Unlike traditional weapons, poison gas caused excruciating pain and suffering to its victims. The effects of some chemical weapons such as mustard gas took weeks to heal and could cause permanent blindness and lifelong respiratory problems. Additionally, poison gas could reach soldiers in the trenches and low-lying towns, affecting both combatants and civilians.