Your argument ignores the precautionary principle, if there is a high probability that our actions will cause catastrophic planetary changes then we should modify our actions in such a way as to make those outcomes highly improbable. It certainly will be a bit to late to admit that we made a mistake once that damage has been done as then there is no going back for man. Every single change needed to address climate change is will make our existence on this planet more sustainable. If we decide to wait and see our unsustainable lifestyle will have got us anyway.
None of this is admitting that climate change is not the issue, but even if it wasn't we should be taking action anyway, every single metric shows that all ecosystems on the planet are under strain to the point of collapse.
the key to my argument thank you.