Multi-color Chocobos?

[Estellios]

Just because you didn't raise a chocobo from a baby doesn't mean you can't get attached to it. It's like saying you can't get attached to a dog because it came from a shelter instead of raising it since it was a puppy.

There are people that just enjoy that kind of thing especially if they add stuff like increasing movement speed/defense/etc and especially once they add chocobos as battle NPCs they could use breeding for altering stats, moves, etc. Even just letting you get cosmetic differences with breeded chocobos is a huge incentive to raise one.