I'm not disagreeing with you, but you should invert the question and think about it.

In the case of a cathedral, I think it is relatively easy to commit to the project you won't see through, it has a significance to those people making the commitment. What becomes much more challenging is when future generations don't have the same level of commitment, it's a much bigger ask to stop. Maybe there is a better use of the resources that could impact people immediately; if it's a church, I'm thinking feeding the hungry and clothing the naked sorts of things. It's hard to stop something that "we've just been doing." It's also hard to ask "why are we doing this?"

In 200 years, suppose there is some crisis we cannot predict and the recital is to be interrupted or stopped. There will be an incredible amount of pressure on somebody to make a good choice. Pressure that was created by a distant ancestor, of sorts. That might be part of the beauty of it, that might be part of the bond that ties different people together throughout time and it might be wonderful. What if there is a caretaker that is ready to retire and cannot find the next caretaker? That seems like a horrible position to be in.

Japan is or was doing multi-generational mortgages a while back (I assume they might still be.) as it was the only way a family could afford to buy a property. I can see that being a tremendously loving act for your children or grandchildren in providing a property that they will own, but I could just as well see it being a gigantic burden to them, what if they want to live somewhere else? Them following their bliss effectively changes the living and working future of the parents.

There's always an opportunity cost to making art. Taking your argument to it's extreme people should never paint or make music but instead spend all their time growing food and building homes (and distributing those goods because that's a big crux, we could feed everyone on the planet if we got food to the right people).

The cool thing about freedom is that we don't have to be rational monks that are slave to economic utilitarism.

This conundrum comes up sometimes in the context of generational starships, about intermediate generations being born into bondage board, committed by their ancestors to a shitty life in a metal tube, with their only purpose being a preordained duty to keep a few systems operational and produce the next generation of slaves just so that eventually someone can birth the arrival generation.

Alastair Reynolds' book Chasm City touches on a bunch of this, in particular the class warfare angle of some wealthy travelers getting to enjoy the journey in peaceful cryosleep while the poor ones pay for their passage in servitude.

> In 200 years, suppose there is some crisis we cannot predict and the recital is to be interrupted or stopped. There will be an incredible amount of pressure on somebody to make a good choice. Pressure that was created by a distant ancestor, of sorts. That might be part of the beauty of it, that might be part of the bond that ties different people together throughout time and it might be wonderful. What if there is a caretaker that is ready to retire and cannot find the next caretaker? That seems like a horrible position to be in.

We have plenty of examples where this has already happened. Traditions that were maintained at significant cost in the face of difficulties or opposition. Caretakers of something ancient who struggle to find an heir. We tend to view them positively.

> Japan is or was doing multi-generational mortgages a while back (I assume they might still be.) as it was the only way a family could afford to buy a property.

I suspect this has been misreported. Japanese mortgage terms are pretty normal and property prices are much lower than in the west (even the bubble only really affected central Tokyo). There's a practice of an elderly parent being able to get a mortgage that's then "inherited" by a child, in cases where the parent is retired or close to retirement, but it's pretty much a face-saving (and tax-avoidance) measure.

They couldn’t even quarry the Washington Monument out of a single color of stone. It’s not that visible in pictures but if you go see it on a sunny day it’s hard to ignore that stupid line in the middle.

If you take too long building a cathedral the quarry might exhaust itself in the meantime. So even if you keep to the design it might not look right.

> The outside facing consists, due to the interrupted building process, of three different kinds of white marble.

Maybe a crisis will occur and maybe our descendants will have to make a tough choice, but that could enrich the story of the performance. If they choose to end the performance for whatever reason, that’s their business. The hopes and desires of one generation can only hold sway over the next for so long.

That's the beauty of a long-term commitment. You are stating so much confidence about the future that you say "yes, we can have a functioning society and set aside these resources".

Sure, you can create scenarios were that fails. You can do that for anything. The power lies in saying "we are willing to remove these paths from consideration because we as a people are committed to not letting them occur".

It's a model that fails if you apply first-order utilitarian calculus. But the intangible value of the hope and commitment in it likely overshadows any immediate gain. This isn't about how to maximize utilization or optionality. It's a bold statement about who we are, and a lodestar to aspire to. (Which is, ultimately, the job art does)