I think you've hit on a good point above aroom - many people interpret Scripture how they want, and, unfortunately, this can be in order to repress people.
I was brought up C of E although I don't follow that faith now. However, I do believe that as long as what people are doing is within the law, then they should not feel guilty about it. I was reared in an environment that said that same-sex relationships were taboo, that 'living in sin' was taboo, that mixed-race relationships were wrong, and that women should be subservient, and that every day should be lived in fear of God striking me down.
Over the years, I have come to see that much of these teachings have nothing to do with the bible, but from people's fears. If I am really logical and rational, I can see it was riddled with hypocrisy. One of my teachers was a lesbian (closet), and one of the church elders was having an affair.
Personally I have mixed feelings about whether there was a Jesus or not, but if there was, considering the people that he mixed with, and what he reputedly preached, then I think many people are following the wrong guidance. He said that we should treat people as we expect to be treated, to not judge, and not to throw accusations about. He hung out with those shunned by society. So it stands to reason that he'd have no issue with anything that I was told was 'wrong'.
I don't buy the line that women should dress modestly because men can't control themselves. I don't have a problem with women WANTING to cover up, and I'm not a fan of those who wear a belt as a skirt/top, but what a woman wears has no reflection on whether a man can 'control himself'. That's rubbish. It undermines the previous argument that women should be subservient to men.
I don't think that Sunday should be any more special than any other day. Every day should afford some time to reflect on the gifts we have in life.
It sounds as though you've thought through your position carefully. After years of being told what to do/say/think, you're making choices that suit you. Enjoy those freedoms. :)