dac wrote:
I honestly think it would make the most sense If they passed away during Applejack's childhood.
I agree with this.
BUT I disagree that there could be an episode dealing with loss. I feel like dealing with a subject like that would be extremely controversial amongst the younger viewers (well, their parents), so I don't think that it would be wise for such a new show to go in that direction, and I'm pretty sure the writers would agree with me.
In the Sesame Street case, the show had been very well-established before dealing with stuff like that, and I just don't think MLP:FiM is at that point. Sesame Street is also, let's face it, far more educational than FiM, and it's been running for so long that they naturally have to teach about things besides love and tolerance. They've touched on many other non-childish topics in their 40 years also. FiM has only been on for, what, 18 months or so, so if it were to delve into such topics I think it would face lots of criticism.
When a kids' show decides to deal with something like loss, the episode must be exceptionally well-crafted so as to make the emotions clear to children, but not to make the emotions devastating for the children to witness. The Sesame Street episode was controversial at the time, but it has since been lauded for doing an extremely good job of dealing with the issues related to loss.
I agree with Engie in that there may be an episode revealing more about Applejack's family history. But whatever the history may be, it's clear that she's lived with Granny for a very long time. In that context, I prefer to think of her parents working and living somewhere else that's not amenable to raising fillies – I guess like Rarity's parents.