Incorrect. I do want to leave the world in a good shape, by the very virtue of improving it for the current generation. I merely oppose the benefit of the future at the expense of the rolling present. Climate change reform is inherently fitting of this definition. If it will do nothing but hinder for my entire life, no thanks. If something is a long-term investment, sure.
Had I been a real one-lifer I would advocate a Keynesian program of 400% debt to GDP and let us indulge in it until we die. Why would an egoist/one-lifer want budget cuts in the first place anyway?