@McGentrix,
I think your concepts of morality are a bit jumbled and hard to distinguish what you are referring to. Some could say you are giving examples of slipping of morality not necessarily an actual stand point. Just like someone could believe something is wrong and immoral but turn around and do it despite their belief that it is wrong. Does that mean their morality changed? No, it just means they ignored it for some motivation. Morals are not walls to most people, they are just something people strive to maintain for what ever purpose but sometimes they transgress them.
I try to make my morality as simplistic as possible.
1.If my action causes others * against their will, it is immoral.
2.If my action causes myself * against my will, it is immoral.
(number 2 is odd but necessary.)
3.If my action does not cause others * but it is against their will it is still immoral.
(number 3 might seem odd because why would someone not want something harmful done to them? Because it is against their will. It could be pleasurable but since they don't want it, it is wrong, and example of this could be unwanted sexual pleasure.)
4.If my action does not cause myself harm but it is against my will it is still immoral.
(number 4 might seem odd. Why would a person do something against their will to begin with? Especially if it is pleasurable. How could it be immoral? Because the person will feel guilty if it was against their desired morality but they lost will power to abstain against it. Why would failure to uphold a personal precept be immoral? Because it brings self pity or shame to one's self and causes pain, self torment and suffering.)
5. If my action does not cause others * and it is according to their will then it is moral.
6. If my action does not cause myself * and it is according to my will then it is moral.
7. If my action causes another * but it is not against their will, then it is moral. (an example is assisted suicide)
8. If my action causes myself * but it is not against my will, then it is moral.
(an example of number 8 would be drug use. It can cause harm and suffering but since it was not against the will then it is not immoral.)
* harm, pain and or suffering
Notice that I do not combine myself and others together. Others who object to my own actions on myself or towards others is irrelevant. Just because another person doesn't like the action it should not have any impact or bearing on weather it is immoral or not. Why? Because all cases are covered according to actions done either upon myself or others.
If I am perfectly fine paying for a prostitute who in turn is also fine with selling their body for sexual pleasure then no harm is done if both parties are in agreement and want to be involved. You could try to claim that prostitution is harmful but in my opinion it is no more harmful than any other activity. The important part here is their willingness to be involved. If they don't really want to be involved than it would be immoral.
I know number 8 a lot of people will object to and say it contradicts others but the important aspect is weather or not harm is willful or not. Such as, some people enjoy pain, they receive pleasure from it. To conclude that all pain is undesirable would be false. Some people know the risks of habitual drug use but continue with it even when forced to get help.
You can blame it on addiction being too powerful to overcome and this is why it is bad but no. If a person really wanted to quit they would. Many people don't want to quit because nothing else replaces their feelings while using the drug. You could consider this part of why it is considered bad. But once again, no. If that is true then you could use exercising in the same line of reasoning.
Anything and everything can be a source of addiction that can be unhealthy even if it is positive or helpful. However; people seldom ever acknowledge that these things are bad, because they seem so positive. They can still be just as destructive. Such as adhering to certain religious beliefs.