When your life is as dull a gray as the world that surrounds you, the mundanities can make it all seem meaningless. Sometimes all we need is a little color -- or six -- to reintroduce us to what truly makes life worth living.

*6-16-2017 Edit, added Rainbow Dash tag because it triggered knighty.*

Robert Parker is a 24 year old ex-web developer living in New York city. In the wake of the conversion movement, he has seemingly lost everything. Haunted by the same nightmare every night, he soon realizes that he must make a choice.

To those unfamiliar with the Conversion Bureau: it is a scenario created by an author named blaze in which Ponies either appear in the human world or have lived beside humans without incident for millennia. One day, in the face of all the damage humanity has done to its world, the ponies offer a solution: undergo conversion to become a pony and allow the world to be inundated with Equestria's influence: thus healing it and bring forth a golden age.

Many different authors have taken many different approaches to this idea, all of them are worth checking out.

http://www.ponychan.net/chan/fic/res/53616.html (The current thread)
http://www.equestriadaily.com/2011/04/conversion-bureau-compilation.html (The compilation post on EQDaily. *NOT UPDATED*)

when the ponies first appeared, their offers of ponification and a simpler life in Equestria attracted people from all walks of life. This is one of those stories.

Bonus Chapter incoming!

The spirit of madness learned his lesson after those pesky ponies re-sealed him in his stone tomb. This time around there would be no princess Celestia, no elements of harmony, and most important of all, no magic of friendship. His plan was to tear the kingdom apart at the seams, and this time, his scheme was perfect. An infinite jest that was to be the jewel in his chaotic crown. Equestria would be torn asunder and his sweet insanity would rule the land once again until the end of time.