High Papajon,
You only defoliate for 3 reasons!
1. Leaves are stacked on eachother blocking airflow. When moist can not escape it can cause mold or fungal.
2. There is a large leaf on top blocking a lot of light from a larger part of the plant below.
3. All the way at the bottom where light doesn't reach enough.
Next to the 3 reasons mentioned above it is just decreasing yield!
So study your plants, make a plan and only cut when necessary.
Happy Growing Buddy! 💚