This is the essence of why we develop habits - it saves our brain power for when we need it during the work day.

It's strange but my wife seems to have an endless supply of this choice-making brain power - she never tires of poring over options, whether it be deciding what to eat or shopping online for shoes. I just want to be done with it as quickly as possible; it's almost physically painful for me to go shopping and be confronted by endless choices.