Topic of conversation: Retirement through a focus on productive property improvements and extremely low cost of living, vs relying on the markets.
Let's assume that, at some point, exponential growth on a finite planet hits some sort of wall. I know, there are lots of electrons spilled claiming that this just ain't so, but let's assume that, in the next 50 years, we hit some sort of hard limit. Climate, political, economic, resource-based, whatever. Something. Doesn't matter what.
This means that relying on market returns for early retirement is likely to run into a problem as well - if the market returns are small, flat, or negative, that puts a bit of a crimp into many people's plans.
An alternative path, one which I've been pursuing, is one of "extreme expense reduction." This looks like a paid off house, solar for energy production (probably oversized a bit, so even if I'm net pushing more onto the grid than I pull, I have more energy if I can't afford the grid in the future), gardens, rainwater capture, greenhouses, a root cellar, etc. And, ideally, working relationships with people in the local community I can trade with.
It seems, to me, that this is a more robust solution against a variety of possible futures. If markets continue heading up, great. I have good food, cheap power, and more money than I know what to do with. If they don't - well, I still have cheap power, enough food, and ideally a surplus to trade locally.
This also ties into my desire to have a wide range of income-generating skills. I have a few profitable side gigs, and intend to keep working on those. With some of the stuff I plan to do to my property (solar, aquaponics, etc), having useful knowledge in these areas will make me of value going forward if I'm right. That guy who knows how to set up a rocket mass heater for an aquaponics greenhouse is likely to be in demand, if local communities need to ramp up their own food production.
It's a pessimistic viewpoint of the future, which I entirely acknowledge (and my day job does consist of basically get paid to be a pessimist, so I recognize my bias), but the returns on some of this stuff are radically less dependent on the markets than just shoving everything in an index fund.
Anyone else taking this path and have useful suggestions?