It's the precautionary principle that's irrational. The status quo isn't inherently desirable. It's not true that "know one knows what would happen." We don't know everything that would happen, but we do know a lot. We also know what is happening now, with an important ecological niche unfilled.
Humans have historically had enormous effects on the planet, in all sorts of dimensions. At this point there's no avoiding it, but we can be more thoughtful and deliberate in how we manage our environment.
Humans have historically had enormous effects on the planet, in all sorts of dimensions. At this point there's no avoiding it, but we can be more thoughtful and deliberate in how we manage our environment.