In my email account I created a signature and I unchecked the 'Place signature above the quoted text for relies and forwards'

My question is, when I am trying to forward an email, sometimes I need to insert my signature so I select it from the Insert -> Signature -> My Signature. 

Why my signature is always placed in the bottom of the email? Is there any way to insert it automatically in the cursor's place? Or I have each time to scroll in the bottom and cut-paste the signature in the place which I want?