intentions alone do not determine the character of an act
Yes they do.
In fact, intent is the only thing that can determine the character of an act...thus the reason courts use intent when deciding whether or not a person gets charged for murder.
even if one's intention is to avoid pregnancy for selfish reasons--as opposed to noble ones--there is nothing intrinsically wrong with not having sex during the fertile period, as everyone here knows
"as everyone here knows" Nope, try again
You can't just post something that's clearly an opinion, and not backed up by any kind of science or historical fact, and follow it with "as everyone here knows" and expect people to just accept it as common knowledge.
There's nothing intrinsically wrong with wanting or not wanting to get pregnant.
How can avoiding pregnancy be selfish? The potential "new life to be" doesn't exist yet at that point so who is getting ripped off by the couple who chooses to use contraception?
as to the Scriptures, I don't think it is possible to defend contraception or claim that Onan did not die for contraception without going beyond Scripture
Did you have another book that we should be looking other than the bible that gives a historical account of this occurence?
as to Tradtion: there is no historic source of the N.T. besides Catholic Tradition. so it is authoritative.
"hold fast to the writtern and oral traditions" 2 Thes 2:15
No, the Catholic Tradition has the only historic source of the
Catholic interpretation of the NT.
We have to keep in mind that the current Catholic interpretations of the bible are based on the Vulgate; a translation by St. Jerome who was commisioned by the Pope to make a revision to the original latin.
So naturally I would expect that a version that was made by Catholics, for Catholics would convey ideas that coincide with what the Pope's personal convictions were.
I'm not trying to be insulting, please don't take my posts the wrong way, but when we translate what you're attempting to do into plain English, it's nothing more than arbitrary statements based on your personal opinions mixed in with a splash of circular reasoning pertaining to the catholic church.
Essentially, what you're doing is this
"The Catholic Traditions say to always obey the Catholic Church"
"You shouldn't use Contraception because the Catholic Church says it's wrong"
"The Catholic Church teaches to always hold fast to the Catholic traditions"
"The Catholic Traditions say to always obey the Catholic Church"
"You shouldn't use Contraception because the Catholic Church says it's wrong"
"The Catholic Church teaches to always hold fast to the Catholic traditions"
"The Catholic Traditions say to always obey the Catholic Church"
"You shouldn't use Contraception because the Catholic Church says it's wrong"
"The Catholic Church teaches to always hold fast to the Catholic traditions"
"The Catholic Traditions say to always obey the Catholic Church"
"You shouldn't use Contraception because the Catholic Church says it's wrong"
"The Catholic Church teaches to always hold fast to the Catholic traditions"
Thus far, you've provided nothing outside the realm of Catholicism to back up your statements.