That is not a caveat, that is an assertion, which we are testing in this discussion.
B. The morality involved is the application of knowledge about safety and reproduction.
That is a caveat that was not in the original OP. The two caveats in the original OP were honesty and intent to do harm. Even those two limit the promiscuity, thus this thread is not talking about all promiscuity, but only honest promiscuity where there is no intent to do harm. Within that narrow definition of promiscuity, you wish now to narrow things even more to promiscuity that takes knowledge about safety and reproduction into account. Even, if one accepts this rather narrow view of promiscuity, one is left with determining what is sufficient safety and reproduction considerations, and how one would apply moral standards to such a complicated situation.
C. The intent of causing harm is also a factor.
I have never contested that intent to cause harm is a factor.
So it is the intent that is immoral not the act itself
Another immoral action would be to disregard knowledge one posses about sexual reproduction and associated risks.
Intent being a factor does not make it the determining factor in establishing morality.
You still have yet to show how the act itself devoid of associated risks and behaviors is immoral.
I did not say that an act devoid of associate risks and behaviors is immoral. I began this discussion by pointing out that morality is established based on the risks that a given activity poses to an individual or society. It is you who rejected risk as a determining factor in the establishment of a moral standard. Now, one can make an act devoid of associated behaviors, but one must be able to show how one can be sure that those associations are not present.
Further more this potable non-potable nonsense about water is baloney. Plenty of diseases are spread within potable water. Ever mix a bottle/cup of liquid up with a family member? Ever shared a drink with someone? Ever shake someones hand? ever touch a door knob.
All of these actions are not deemed immoral yet they carry the same if not greater risk factor. Your caveat about potability is the only true caveat discussed thus far. [/img]
Not true, many consider handshakes to be immoral. That said, just because certain acts in general are not immoral does not mean that similar specific acts are moral. Mixing up a bottle or cup, when one is ill, is indeed an immoral act. I have addressed the handshake issue earlier. Fist bumps with a given number of people, while wearing a rubber glove is indeed less risky than having sex with the same number of people while wearing a condom. The potability of water is the one response your list of generally moral acts that has been latched on to. However, as I pointed out before, you have seriously limited the definition of promiscuity in at least four ways, honesty, intent to do harm, safety and reproduction considerations. When one applies these limitations to the other actions that you presented as moral, the comparison is not even close, promiscuous sexual behavior cares a much greater risk.
Now, given the intimate nature of sex, how does one establish that an individual who is having indiscriminate sex with multiple partners is being honest, intends to do no harm, is doing so safely and is taking reproductive considerations into account? Even if one holds that the morality lies in these factors and not in the otherwise indiscriminant nature of the act, the inability to establish these factors makes the activity immoral because one can not be sure that those factors have been handled in a moral fashion.