Alright, so some people might be wondering why I wrote The Midlife Crisis story. Even if you aren't wondering I'm going to tell you anyway.
I have seen plenty of stories with the "X goes to Equestria via some mysterious... thing" and it bothers me that the author couldn't come up with a better explanation.
That was the biggest thing for me; could I write a story that involved an outside being going to Equestria and actually have it make sense.