Personally, I believe faith in public should be under attack. However, in private, it is up to you if you choose to practice religions (I consider places of worship to be private, in this example.) By public, I mean schools, hospitals, shopping centres, the street, the government etc.
EG: When I was in primary school, we had to pray. If we didn't, then we were not allowed to eat our lunch. Now, someone who is against praying (and there was one girl) would have have to do something they disagree with or they wouldn't get FOOD. Or they would have to do something against their moral code. Is this right? Schools should not make religion a central part of the school eg: we had a only christian assembly every day. Nor should there be allowed to be a religious school in the area, if there is not a similarly achieving secular school within reasonable distance (up to around 3 miles.)
My next point focusses on the government - no law should be allowed/disallowed on the basis of religion. In effect, this contradicts my whole argument here, but life is full of contradictions. But, laws with a reasoning based on religion should simply not be allowed. That works both ways too, not just against religion. There should be no law saying "You can't have abortions because it makes baby jesus cry." A valid argument could be "You can't have abortions because it is preventing a potential person." Similarly, there should be no law saying: "Crucifixes should be banned in public." (On the topic of crucifixes - if they present a health and safety risk, then they should not be allowed. Eg: we aren't allowed to wear necklaces in school, but you are allowed to wear a crucifix. Not right.)
Finally, tax and holidays.
I think you should be allowed to have time off work to respect holidays of the religion you belong to. (obviously not just one you made on the spot.) You should have to declare your religion when applying for a job so this can be checked, but not used against anyone in a discriminatory manner. Shops should remain open on ALL days, and tithing places of worship should have to pay taxes, as they are, in my eyes, profitable organisations. OR, the money should be strictly controlled and be used for the good of the community.
In conclusion, I believe everyone should be allowed total freedom of religion, without discrimination. However, it should not 'infiltrate' our public lives, and get in the way of what is beneficial for society.
If you have any questions, feel free to ask