I will agree that as Christians we are afforded certain freedoms as outlined in Romans 14. However, these freedoms come with the prohibition of obedience. One needs only to look to God’s first couple to see how this works.
Adam and Eve were given the freedom to enjoy the Garden of Eden, but that freedom came with a prohibition; “You may surely eat of every tree of the garden, but of the tree of the knowledge of good and evil you shall not eat, for in the day that you eat of it you shall surely die” (Gen 2:16-17, ESV). We all know how that turned out.
Freedom calls for expressions of our gratitude to God’s graciousness. Prohibition calls for acts of obedience. Obedience to God’s command is the most appropriate way to acknowledge God’s sovereignty as our creator.
I think it is a mistake for Christians to see how close they can come to the line of sin without crossing it, and when they get to that line, they are still not comfortable with where they are at so they start pushing the line to where it will work for them, where they can be comfortable.
The apostle Paul knew all this was coming and gave these instructions to Timothy:
“I charge you in the presence of God and of Christ Jesus, who is to judge the living and the dead, and by his appearing and his kingdom: preach the word; be ready in season and out of season; reprove, rebuke, and exhort, with complete patience and teaching.For the time is coming when people will not endure sound teaching, but having itching ears they will accumulate for themselves teachers to suit their own passions,and will turn away from listening to the truth and wander off into myths.As for you, always be sober-minded, endure suffering, do the work of an evangelist, fulfill your ministry.” (2 Tim. 4:1-5, ESV)
I don’t profess to know where to draw the line, and I don’t judge those that set their line at a different place than I do. However, I do use the following words from Paul to help me set my line.
“Finally, brothers, whatever is true, whatever is honorable, whatever is just, whatever is pure, whatever is lovely, whatever is commendable, if there is any excellence, if there is anything worthy of praise, think about these things. What you have learned and received and heard and seen in me—practice these things, and the God of peace will be with you.” (Phil. 4:8-9, ESV)
For me, this means that alcohol, cigarettes, pornography, drugs (including pot), cursing, and tattoos are on the wrong side of the line.
Be blessed.
Toby