Why do rockets need so much fuel for take off?

Rockets require a significant amount of fuel for takeoff primarily due to the need to overcome Earth's gravity and atmospheric resistance. The massive energy required to accelerate the rocket to escape velocity, which is around 17,500 miles per hour (28,000 kilometers per hour), necessitates a large amount of propellant. Additionally, the fuel must produce enough thrust to lift the entire vehicle, including its payload and the fuel itself, making efficient fuel usage crucial for successful launches.