Of the countless things that are present and events that occurring in the world, some have positive and some have negative impacts on individuals, groups, the human condition, and the environment.
Those that have positive impacts are described as GOOD by those wo benefit from and/or are enriched by them.
Those that have negative impacts are referred to as BAD.
Some things may be good for some and bad for others.
Different religions/cultures regard different behaviors as good and bad.
What may be good for humans may be bad for other creatures.
In this sense they DO exist for humans.
If (human) experiences are ignored, and for entities that have no impact whatever on humans, there are no such things as GOOD and BAD.