firstly.. he doesn't exist in the comics.so,he's easier to kill off... beacause if he goes,no major comic plots arent changed.secondly,the writers want ratings!they dont care that much about the fans emotions to make their hero immortal. :( . and then.Daryls story arc is now heading nowwhere...beths dead..carols busy scaring the poop out of people,so no romantic plots are there in the foreseeable future. and lastly,its glenn who's supposed to meet his demise to a certain baseball bat..but there's maggie! if glenn goes,where's her story line gonna go ?