For many, this ship is a memory from our childhoods. People who have grown up watching the Original Series (such as myself) identify the “original trio” of Ash, Brock and Misty with happy, fun-filled youth, when we would get up in the mornings to watch our favorite little balls of destruction duke it out on the television. Considering the Original Series, there was little to no alternative to PokeShipping (ideas like PalletShipping and BoulderShipping being outside of our comprehension, and likely out of our realm of knowledge). Therefore, it was assumed that Ash and Misty were in fact romantically attached (if slightly one-sidedly so). Nostalgic Shippers are attached to the idea because they’re fond of it, much in the way you might be fond of your first toy. These are the Shippers least likely to switch out to other ships.