I'm with Shed here. I pick leaves every day, or rather give the leaves a bit of a trim and only cut what is necessary of the fingers of each leaf. But tuck whenever it's possible.
I have a theory as to why we should take whole leaves rather than trim them. Anyone wanna hear it?
Okay: Cutting leaves damages a part of the plant that normally isn't damaged except by animal, insect, or disease. This causes the plant to stress and send out hormones to try to repair the damage and limit further damage...why the edges turn brown: to prevent further loss.
When a plant naturally loses its leaf it does so at the stem, where it's supposed to. They know best where leaves should be removed.
We only want to stress our plants in ways that accelerate growth and bud development. Healing the edges of leaves doesn't fall into that category.
That's my theory!