Yes, natural resources are limited, but that doesn’t mean that capital is limited. What I mean is that: yes, we’re using more energy as a civilization, but thanks to the investment of capital, we’re also expanding our ability to produce more energy at the same time. And “how much energy our civilization is capable of producing” can increase infinitely.
Yeah, the problem of pollution is certainly an existential threat. But I don’t think it’s fair to say that the type of threat is “we’re running out of resources”. We’re not running out of anything, we’re just producing too much atmospheric carbon!
I do the same! It works quite well.