Well I mean is it not obvious that it does not/does violate (1)?
If you do not see how it logically proceeds, then you must surely have a counter argument why (3) does not follow from (1) and (2). But you have not yet presented one.
Sure. So whats wrong here? You seem to have made up a moral yourself which does not exist i.e. you MUST always have SEX so that you can have children.
But that is not a position of the church. You are fabricating a false position so that you may disqualify NFP also as a possible choice.
The church position is that a couple should be open to life. They should never marry if they think they don’t want to have children forever.
Yes, you see, again, you are basing your argument on a fabricated position that has nothing to do with church teaching.
The amount of effort you put in, or the amount of time you stay without having sex has NOTHING to do with the morality of NFP or Contraception.
The right and wrong of the act is determined by what takes place during the act. Contraception is holding back fertility/rejecting fertility. NFP is accepting everything in the spouse at the moment of sexual intercourse. Thats where the argument ends.
What you’ve done is, perhaps unknowingly, made up a position that the church teaches that one cannot put effort to avoid having a child during a certain period of time where they cannot support a child. But that is NOT church teaching. In fact, if the spouse cannot have sex during a certain period of time due to a disease, there is a moral responsibility to abstain from sex.
So while you keep saying that you’ve looked in this issue a lot, it appears that you are looking to justify your position rather than learn the truth.
God Bless