Out of all the characters at the Motor Inn, Ben's is the most tragic. He joined the group about three months after and by that time everyone got to know each other. The must heartbreaking part is when you realize that Ben really needed someone to look out for him because he's too old to be considered a kid, but not old enough to have experience. Ben needed a Lee Everett. A mentor who would help him through his teenage mind and get him more used to being an adult.
He did really form a connection with Doug (if you save him) but most people chose Carley. I believe that if Doug was mentoring, Ben wouldn't have made half the mistakes he made.