Here is the simple concept of our Bill of Rights -- they restrict government, and empower people. What they do not empower people to do is restrict the rights of others - it empowers your rights. You don't have to believe in religion, you don't have to believe in firearms ownership, you don't have to believe in the right to a fair and speedy trial by a jury of your peers while represented by an attorney. You don't have to exercise any of your rights -- but you will want to when you can't. What you do not have the right to do is restrict or infringe on any other person's rights. The government of the People, by the People and for the People restricts both you and the government from doing so.
If you do not believe in that simple concept - it is your right to find a place that agrees with whatever other anti-freedom concept you may have.