Earlier quoted context omitted.
20-25 years is at the limit of what I could imagine staying in one house with any certainty. How does the extra longevity justify the cost unless I plan to never ever move again?
It goes to the home's value (aka you'd get more when you sell it). I kind of think of it like brick. Brick has a much longer maintenance cycle than vinyl or wood siding.
You'll no doubt recoup some of your value, but not all of it.