Religion being a personal issue, there should be a personal standard.
Those people against gay marriage should not be required to marry someone of the same sex.
Those people against abortion should not be required to get an abortion.
And so on. They should not be allowed to advocate that no one else live by their standards. Someone whose religion allows abortion or gay marriage should be allowed their religious belief, too, and have abortion or same-sex marriage available to them.
The key is that freedom religion is personal, and freedom of religion includes freedom from other's religions.
SCOTUS should be able to make that simple distinction.