The world border gets in the way of immersing yourself into game play sometimes.
For example, I'm trying to play on Origin Realms, but I built my house by the world border for my realm. I made this resource pack so I could enjoy the scenery. No world border. Nada.
Before:
After:
By the way, No World Border is so simple, that you don't have to worry about downloading the right version. It's a one size fits all resource pack!