I agree it is a sin to violate your conscience, but abstaining from eating pork isn't a matter of conscience, but a matter of obedience. God's law clearly prohibits idolatry, so refraining from eating meat sacrificed to idols is likewise a matter of obedience rather than conscience, but God's law does not make it clear whether it counts as idolatry to eat meat when it is unknown whether it has been sacrificed to idols, so that is a matter of conscience.
I disagree that this is what the passage says.
Concerning things sacrificed to idols
1 Now concerning things sacrificed to idols: we know that we all have knowledge. Knowledge makes arrogant, but love builds up.
2 But anyone who thinks that he knows anything does not yet know as he should know.
3 On the other hand, if anyone loves God, such a person is known by him.
4 Therefore,
concerning the eating of things sacrificed to idols, we know that an idol is nothing in the world, and that there is no other God but one.
5 Indeed, although there are [many] things called “gods” in the heavens or on earth—and there are many [so-called] “gods” and many “lords”—
6 yet, to us, there is one God the Father, from whom are all things; and we [are] for him; and one Lord Jesus Christ through whom are all things, and we live through him.
7
However, such knowledge is not found in everyone. There are some who eat things sacrificed to an idol with awareness of the idol, and their conscience (being weak) is defiled.
8
But food does not commend us to God, for if we eat, we are not better; and if we do not eat, we are not worse!
9 However, be careful that
your freedom may never become a stumbling block to the weak.
10 For
if someone sees you who have knowledge sitting in an idol’s temple, will not this person’s conscience, if weak, be emboldened to eat things sacrificed to idols?
11 And thus, through your knowledge, shall the weak brother perish, for whom Christ died?
12 And so, by sinning against the brethren and wounding their conscience when it is weak, you sin against Christ!
13 Therefore, if food causes my brethren to stumble, I will never ever eat meat, so that I may not cause my brethren to stumble.
The weak conscience does not recognize the insignificance of idols, and so would be defiled by eating meat sacrificed to them, if they are emboldened to go against their conscience. But if we eat, or don't, we are not better, or worse. The important thing is to be aware of our weaker brother's conscience.
And so, just so ... I am not encouraging you to change your behavior and go against your conscience.
I mention this only because I brought the passage into the conversation, and so explain why.
