I think it’s useful to remember what you said in the OS thread (Dec 8-10), because I guess this is the essence of your question:
“The Ten commandments seem pretty clear cut to me, yet the church seems to impose other things in with them, making it even harder…not that i’m saying we should have it easy…but that fear factor and control of the masses pops into my head.”
IMO when the Church defines a rule and says “even if you do that one time, you are doomed”, she always uses a preemptive approach: “if X is allowed once/partially/in exceptional circumstances, then people would end up by using X on a regular basis” or “if X is allowed, then people would end up by doing Y as a logical consequence”, so it’s better to prevent than to cure, so to speak, by instituting rules with no exceptions, because the basic assumption is that people are more or less like children - they can’t contain themselves and can’t resist to temptations.
This assumption was particularly obvious when the Church used to forbid people, under the pain of mortal sin, to read certain books or to attend non-Catholic religious ceremonies or when she said that newborn children should be baptized as soon as possible, because the souls of the unbaptized infants can’t attain heaven. Even today you’ll see people quite
disoriented and even angered by the idea that the unbaptized and the non-Catholics can be saved, because they think: if a pagan or an atheist can be saved, why must I bother to submit to each and every rule of the Church and strive to be a good Catholic?
Examples of preemptive thinking. One can say: “what’s so bad if we use a condom only sometimes, since our marital life as a whole is unitive and open to life and we don’t think about our marriage as a succession of isolated, mechanical marital acts?”, while the Church says that each and every marital act should follow the same rules, with no exceptions, because if using condoms is allowed sometimes, the assumption is that people will end up by using them on a regular basis and then will add other means of contraception etc. I understood this 100% preemptive approach when I saw the comments on a thread about masturbation for providing semen samples for various medical diagnoses. I had no idea that the Church forbids this method and requires men to have intercourse with their wives using perforated condoms to obtain semen. Some objected and said: but in this case, masturbation isn’t for pleasure, it’s for a medical purpose! and then someone said: yes, but if a man does this once, he may discover that it’s pleasant and he may be tempted to repeat the experience in a non-medical context.
That’s why the bar is placed so high, as you said on the other thread. The Church says: even if you can’t understand (yet) a certain teaching, you must obey it, because the Church knows better, so the meaning of “informed conscience” is this: a conscience that knows and accepts every teaching of the Church. But what happens when rules change? There is the well-known question: what happened to the souls of thouse who did eat meat on Fridays when the Church said that eating meat on Fridays was a mortal sin? An answer is that “mortal sin is committed not so much in regards of breaking a commandment or regulation, but by the motivation of the heart” (see
here).