In the state of thoughtless awareness we think neither of the past nor of the future. We are entirely in the present moment, in the state of being and do not waste the precious moments of life thinking about times that are finished forever or yet to come. We start to enjoy our Self, our spirit, our own inner beauty and the the beauty of creation. We start to enjoy being. We are able to enjoy the singing of birds and the scent of flowers at a much deeper level as we are no longer bombarded by the meaningless mental chatter that assails our awareness and pollutes our attention, distracting us from the simple joys of our existence. 
So entering in the thoughtless state is like enjoying the scene once you reach the top of the mountain. The enjoyment of meditation can only come if one can reach that state. Having said all those, it is sometimes challenging or hard to experience this profound state.
How is your experience during the meditation? Do you sometimes find it difficult to enter the state of mental silence? What do you do in order to reach that state if you find it very hard at the beginning? What do you think that prevents you to enter the state of thoughtless awareness? You can post your thoughts in the comment form.