What bothers me is religious groups or people attempting to legislate their morality onto the whole of society by restricting personal freedoms.
If they would just follow their own morals and ethics and leave the rest of society alone, I’m perfectly fine with that.
For example, if you don’t believe in abortion, then don’t get an abortion. Leave people who want to get abortions alone, it’s their choice.
Individualism, liberty, consent of the governed, political equality, private property and equality before the law are the bedrocks of liberalism [1]. Religious freedom is closer to a corollary, though hard secular liberal republics (e.g. much of recent French history) have also existed.