They probably do this so creepers don't blow up and destroy your world. Creepers are meant to only blow up when they see a player, that's why zoglins and iron golems don't attack them.
This also applies to coal ore.
They probably do this so creepers don't blow up and destroy your world. Creepers are meant to only blow up when they see a player, that's why zoglins and iron golems don't attack them.
This also applies to coal ore.