> Buying a house that's already been built is pretty damn close to the same thing as buying gold. No new "work" is being done into the economy, you're just exchanging dollars for an asset that will likely appreciate a bit faster than inflation but less than $SPY.

I mostly agree with you, but I don't think the house comparison is good. Houses require lots of maintenance, and to hold their value (comparable to other houses) they often need remodeling every decade or so. If instead of houses we just said "land" then I think the comparison would hold up more.