Sometimes letting "Nature take it's course" has a bad ending. However taking prey from a predator is not smart, wise, or good for Nature. Say you see a Snow fox that just caught a rabbit after a chase and you chase off the fox. Now the Fox can starve, the Rabbit can die of his wounds and all for your conscience.
Then you have times when you think something is bad for a certian animal and it is the only thing keeping it alive. Like a California Jeep trail that was closed because an endangered frog lived in the Ruts created by the 4X4s. They closed the trails to 4X4s and the frogs went extinct.
It is amazing how our conscience can sometimes glare over the truely "right" thing to do.
Then you have times when you think something is bad for a certian animal and it is the only thing keeping it alive. Like a California Jeep trail that was closed because an endangered frog lived in the Ruts created by the 4X4s. They closed the trails to 4X4s and the frogs went extinct.
It is amazing how our conscience can sometimes glare over the truely "right" thing to do.