You can't be sure when your friends will pass away, it's impossible to guess the exact time they do. Every pony wishes they could defeat Discord without the Elements of Harmony, it's impossible to think of such a thing. Becoming the opposite of who you really are without any magic happening to you, so impossible! You can think of a lot of things that obviously can'y happen, the world seems to go with the possible becoming….possible, basically. You can't change what the world wants, unless it's something obvious like polluting the earth. You can't take away gravity, same with it not possible of you becoming the leader of pink polk- a- dotted fire breathing gummy bears and taking over. Life isn't fair, everypony knows that! Magic can't even take a challenge that big. But the question is, why is it when you wake up, you feel something very odd that can't be cured?