There are no moral absolutes in the abstract, but in real life there are some morally correct things. Long before there was a concept of religion, or the Bible, humans noticed that some actions caused harm to individuals and to the society in which they belonged. Murder, for instance, was horrific, and thus became almost universally condemned, as it should. Just because morality is subjective, it doesn't mean we can't all agree on certain levels of subjectivity. We all know murder is wrong, atheists and believers alike. If believers want to say God condemns murder, that's fine with the atheists who avoid murder simply because it is wrong, not because they are told not to do it.
So all your examples are meaningless, for no one is defending immoral acts. Just because we have no need of God, it doesn't mean we accept any actions as moral -- we don't.
In fact, my morality can basically be summarized (in simplified form) as: do what you want, as long as no one gets hurt.
Think of the implications of that: Do you want to overeat to the point of obesity? Can't do it, it would harm yourself. Do you want to commit adultery? Can't do it, it would harm your mate. Want to kill that annoying person over there? Can't do it, it would be harmful to that person, his friends and family, and society at large. Want to engage in sex with a child? Can't do it, it would harm the child, etc.
It actually makes for a very moral person. Now to comment on your lists, but only from MY point of view (I can't speak for any one else). You won't agree with what I say, but that's fine for I don't agree with your level of morality either. I think you are a very immoral person, for you support an idea that will lead to the death and torture of countless humans.
1) I was just wondering how anyone who believes that morality is subjective can actually take a stand against pedophilia?
I am against anything that would harm children.
WHY is it any worse than homosexuality or lesbianism?
Because adults get to make their own choices and are emotionally capable of dealing with sex.
WHAT age is considered acceptable?
No such number can be given, for each person matures at different levels.
2) How does one take a stand on teenage (or pre-teen) sexual activity when it is actually none of your business, even as a parent (according to secular organizations like Planned Parenthood, etc., the A.C.L.U.)?
It is very much your business as a parent, and no one can take that away, even though Christians keep trying to do so by forcing their agendas into the schools despite what non-Christian parents want. Still, though I disagree with Christians, and you disagree with Planned Parenthood, it doesn't change the fact that you as a parent have a full say. Assuming you rear your children correctly, of course.
3) How do you feel about the Center for Disease Control lying about the effectiveness of condoms regrading lots of the new STDs? We see very clearly that there is a political agenda to make people believe that sex is generally without risk or GUILT and should that over-ride the results of actual clinical studies, putting all of us at risk? Did you know that there actually was a point in the early 80s where AIDS could have been stopped with a quarrantine but it was not used because of the homosexual political/entertainment/media connections!
Of course it couldn't have been stopped with a quarrantine! It was worldwide in the 1970s, even though no one knew it yet. Besides, a quarrantine sounds like the worst moments of human history. No death camps for me, please.
As for condom use, it helps, but no one says it is 100% effective. What lies has the CDC made? Be specific with references.
4) Should those who are infected be prosecuted if they continue to expose people to STDs even after they are diagnosed? If not, why not?
If they are doing it deliberately, with full knowledge of their actions, of course. They would be harming others, and that is morally wrong.
5) How would you establish a moral/legal guideline any more effective than pre-1960 American norms?
You mean back when the adults were getting drunk, wife swapping, and hating their lives but couldn't talk about it? You mean back when the kids were sneaking around having sex and then getting abortions in the back alley? Yes, a wonderful time to be living, if you were a hypocrite.
What would I establish? Nothing. It's none of my business what you do. I worry about myself and my family.
6) Why would you continue to promote illicit sex when it is proven to result in so many problems for society? Abortions, teen preggies, kids raised without parents, delinquency run rampant, welfare subjegating people to the state.
All those things are more prevalent in America than in Scandinavian countries, where sex is more open and accepted, and thus the kids are far less obsessed with it. The more you clamp down, the more enticing sex becomes to your children.
Instead, teach them responsbile but loving ideas about sex, don't condemn someting so natural, and watch the abortion rate drop, the pregnancy rate drop, the deliquency rate drop. It happens, just look at other countries. Your Christian obsession with sex dooms your children to be messed up.