Why Rick Grimes was written off The Walking Dead the correct way

Why Rick Grimes was written off The Walking Dead the correct way (Spoiler Alert)

  So this week Andrew Lincoln's Rick Grimes was written off the Walking Dead at his own request. After the events of episode 4 that left Rick severly wounded many predicted that we would see the death of the character in this episode, however, that wasn't the case.

Towards the end of the epsiode Rick lures the group of walkers to the bridge, where he destroys the bridge and the rest of the characters believe that he has been killed in the explosion. Later in the episode Anne finds Rick still alive, she manages to convince the people in the helicopter to pick up her and Rick. 

Now I along with pretty much everybody else thought Rick was going to be killed off but I realise that if that had happened then that would have been a mistake. With Rick surviving it allows the possibility for Rick to return to the series on a later date with a new perspective.

Also after the episode it was announced there would be a trilogy of Walking Dead Movies starring Lincoln showing Rick's perspective which is great as it will provide a different change of pace to the show and give us answers to questions that the show introduced. 

Overall I am not sure that The Walking Dead show can survive without Rick Grimes but I am actually excited to see what happens with the character and his future in this universe.