I think it is worth asking, would such a building be erected today? And if the answer is no, then why not?
And is it really a good cause? Who does it benefit? Probably not the common hoi polloi apart from the temporary jobs that might be created. Ok, if it's good for tourism, then perhaps the tourists should be charged a hefty price for viewing it.
I think it is worthwhile trying to put oneself in the place of someone who was alive when it was being built. Remember that a large proportion of the people were illiterate and uneducated, and perforce had to doff the cap, tug the forelock, and do what the priests etc, ie the literate and educated, told them. So maybe it was all for the edification of the religious fraternity with the common man being told to cough up and shut up. Which perhaps leads me onto thinking that perhaps the religious fraternity should pay for its restoration. After all, we keep hearing about how much money the religious fraternity have stashed away, so here is (maybe) a suitable project for them.
Hmmm.
Peter G. Shaw