I admire the magnificent architecture, art work and the amazing display of skills brought together under one roof, but I can't help feeling sad that huge amounts of money was spent glorifying a non-existent being when people struggled to survive, if only that much effort and expense was put into schools, hospitals, etc.
Here in the Untied Kingdom we have some magnificent churches and cathedrals, I visit some of them if I happen to be in town, not for the spiritual uplift, only to marvel at skill of the people who designed and built them in the days when heavy machinery wasn't available.
I'd be able to appreciate Handel's "Messiah" more if it wasn't constantly used in commercials and lame TV shows and movies, but I get your point.
I can picture a future where these beautiful artful buildings (minus the bloody corpse statues) will be used for secular humanist gatherings and celebrations and the religious part will be historical. It is annoying that they siphoned off all the resources but I am moved by the art of them. Some of the artists were surely atheists (like Leonardo da Vinci) working for a paycheck.