Why there is no option to add comments to trades..?

 

Why there is no option to add comments to trades once they are executed or finished... ?

 
Comments are only used by Broker or ea. No was to fill it in a Manual Order
 

You can only set a order comment when you place an order, not when modifying it.

The same applies when modifying an order via MQL5 code. It cannot modify the comment.