# Why is activation enthalpy found and not just rate of reaction?

What is the benefit of finding the activation enthalpy and not the rate of reaction?

Reaction rate , Activation energy are connected to temperature through Arrhenius equation. We are interested in Activation Energy as it gives an idea what temperature the reaction starts. We want to know $E_{a}$ in order to manipulate reaction rate essentially. Catalysts or Inhibitors work essentially on this principle.