@dalias Less can be more. Utah in the US has more than its fair share of, um, eccentrics. 20-30 years ago, when people still took public health seriously, the authorities were trying to get everyone vaxed.
It being the US, the vaccines cost $25. You could fill out a piece of paper for a religious exemption. Heaps of people did that.
Someone had the bright idea: hey! make the exemption cost $25 and make the vax free.
Solved it. Vax rates shot up. Religions apparently stopped caring overnight.