It was more nebulous in the books

Jon as a character was moving thing around in a big way at and north of the wall
Killing him extends the story up there into a muddled mess
Maybe leave way for other characters to take charge, maybe sir piggy
But meh I dont care about those characters that much


But here
George definitely left things a bit more open with his wolf being alive

I hate that the show completely dropped the ball on the wolves

http://www.ew.com/article/2015/06/14/game-thrones-jon-snow-really-dead


This is actually the one thing they could have tweaked but no their changes were really gratuitous
Cowards
This change would have been a real risk and totally separated from the books
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When you are born, you cry, and the world rejoices. Live so that when you die, you rejoice, and the world cries.
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You cannot hate people for their own good.