In the debate you are having, although to some extent you come to an agreement that the price or purchasing power of bitcoin will have to flatten in the future, I am closer to JJG's thinking.
I'm saying the planet isn't designed to pump forever
Well, of course it cannot grow indefinitely forever, but there is a pessimistic view of human growth exemplified by Malthus, and which at least for the moment has been proven wrong. He said that humans grow in geometric progression and food production in arithmetic progression, so that food shortages would not be long in coming due to lack of resources. When he was alive, there were 1 billion people on earth, today there are 7 billion who are generally much better fed and have a much higher standard of living in terms of consumption of goods and services.
But yes, I suppose there has to be a limit to growth and it cannot be infinite, what I doubt is whether we are putting how we imagine the limit very short.
Even though you suggest that you are agreeing with me, P_player.. you have also framed the matter a wee bit differently, since you are focusing on the various kinds of ability to produce more and more abundance, and it seems that I was largely focusing on the fact that bitcoin is the most scarce of goods or assets.. so in that regard, if something more scarce or in the ballpark of the same scarce does not come along, then bitcoin is always going to be gravitating value into it relative to other products and assets... in other words always increasing in value.... seems to be getting somewhat far afield to be attempting to address the matter in terms of various consumption goods and services - even though for sure, there is always value in consumption goods and services - for mere survival... so in that regard, some bare minimums of consumption goods and services do need to be provided, if we are on a desert island, and there is limited water and food, then that water and food will be the most valuable at that point.
On the other hand, when we are presuming some basic levels of production of consumption goods and services and talking about currencies and various other assets such as housing or precious metals, then we are back to bitcoin being the most sound and scarce of them all and likely to pump forever, even if the pump becomes more gradual and flat with the passage of time, I am still presuming that bitcoin is not going to go completely flat, but I am also presuming that we are talking well over 100 years in to the future..... so that does seem to be quite a bit less concrete in terms of our current investment thesis or even projecting into potential legacies that we might attempt to create by being early bitcoin adopters, accumulators and hodlers.