How can there be infinite growth on a finite planet?
This is why I'm confused: aren't you a centre-conservative ?
Growth means growth of the "economy", which is a man-made idea of the movement of goods and services of "value".
So if I come up with a wheelbarrow that is easier to use, with smaller tires, I have created something I can trade for more goods and services. The economy has now "grown" even though I am using something with less material. New services can grow the economy and not degrade the planet. And if humanity is to survive, we eventually have to leave the planet anyway.
Have some imagination.