You're kidding about killing Clementine off right? The entire game was basically ABOUT protecting Clementine.. And I think they made the right move with killing Lee because I think that giving his life to protect Clem "redeems" him from that murder he committed prior to the zombie apocalypse. It's like Kenny. He felt like he wasn't the dad that he could have been to Duck or the husband he couldn't be to Katjaa, so he felt like he needed to sacrifice his life so that Ben didn't have to suffer. If you think about it and really go in depth with it, you would know that Lee's death was one of the most brilliant moves that TellTale did in this game. I know it sucks that Lee died and I used to be in denial too, but I learned to accept the fact that he will most likely not be coming back.
"Religion is regarded by the common people as true, by the wise as false, and by rulers as useful."