A bit of a broken record
My last reading in my seminary Systematic Theology studies was this by Anthony Hoekema:
Churches that fully accept Paul's teaching on justification by faith may yet exhibit another kind of legalism: the insistance that their members abstain from certain practices that are deemed wrong-though they are really "indifferent things".
With respect to the question of which practices are to be put on the list of "forbidden things" there is great variety. In the United States many evangelical churches, particularly of those of the fundamentalist type, have rules against smoking, drinking, movies, dancing, and card-playing. Many churches in Europe, however, whose members readily drink and smoke, recoil in horror at the idea of Christians wearing blue jeans or chewing gum. Some years ago my wife and I heard a sermon on the Parable of the Good Samaritan in a Protestant church in Interlaken, Switzerland. After describing how the Good Samaritan bandaged the injured man, put him on his donkey, and brought him to the Inn, the Pastor went on to say, "He [the Good Samaritan] gave him a cigarette and a beer, and had a little talk with him". We were greatly amused, and wondered how American fundamentalists might have reacted to this application of present day Swiss hospitality to the man in the Parable!
Hoekema goes on to say, "The danger involved in this type of legalism just described is that abstinence from these "indifferent things" comes to be thought of as the essential mark of a Christian. When this is the case, things that are less important receive greater emphasis than the things that are most important, so that we end up by majoring in minors. When this happens, we are like the Pharisees about whom Jesus said, "You give a tenth of your spices-mint, dill and cummin. But you have neglected the more important matters of the law-justice, mercy and faithfulness" (Matt 23:23).
Anthony Hoekema, Created in God's Image, (Grand Rapids: Eerdmans, 1986), 238-239.