Lament ye

After reading this post by lizbee I feel as if I have to go into mourning for the Doctor; as if he died and some shape-shifter stole his body and I didn't realize it until now.

I don't want to feel this way. I don't want to feel as if the Doctor is no more.

Please, people, tell me why I should have any hope for Doctor Who, and Ten in particular.

ETA Comments contain spoilers.

Beta please?

Anyone up for a beta? I've been inspired for my hirothon story and just finished the first draft.
Heroes/Doctor Who, AU, spoilers for "The Christmas Invasion", "The Sound of Drums" and "The Last Time Lord".