Do What Leads To Peace

13Therefore let us stop passing judgment on one another. Instead, make up your mind not to put any stumbling block or obstacle in your brother's way. 14As one who is in the Lord Jesus, I am fully convinced that no food is unclean in itself. But if anyone regards something as unclean, then for him it is unclean. 15If your brother is distressed because of what you eat, you are no longer acting in love. Do not by your eating destroy your brother for whom Christ died. 16Do not allow what you consider good to be spoken of as evil. 17For the kingdom of God is not a matter of eating and drinking, but of righteousness, peace and joy in the Holy Spirit, 18because anyone who serves Christ in this way is pleasing to God and approved by men.
19Let us therefore make every effort to do what leads to peace and to mutual edification. 20Do not destroy the work of God for the sake of food. All food is clean, but it is wrong for a man to eat anything that causes someone else to stumble. 21It is better not to eat meat or drink wine or to do anything else that will cause your brother to fall.
22So whatever you believe about these things keep between yourself and God. Blessed is the man who does not condemn himself by what he approves. 23But the man who has doubts is condemned if he eats, because his eating is not from faith; and everything that does not come from faith is sin. Romans 14:13-23

Some of us are strong in the faith and some are week. When we're weak we may have convictions that aren't from God. Often the stronger brother wants to be the Holy Spirit for the weeker and tell them what is and isn't ok to do. This isn't our role. Our response is to abstain for the sake of the weaker brother in order to maintain unity within the church; to be willing to forfeit our "rights" so that or fellow Christians won't be destroyed.