According to a recent survey conducted by Looper, fans of the show "Blue Bloods" believe that Danny Reagan has the saddest story among the Reagan family members. With 31.07% of the vote, Danny's tragic life experiences have resonated with viewers the most. As a former Marine, he suffered the loss of his entire unit while on duty in Iraq. Later, he lost his wife Linda in a helicopter accident and also had his home destroyed in an act of arson.

Though Danny may come across as brash, his backstory is heartbreaking, and fans have recognized this fact.