I'm having trouble understanding how Christians need to make any issue about the Sabbath day, when Paul carefully explains in Romans 14:5-6 that it doesn't matter if we "regard a day" or "see all days alike." Paul follows up this point in Colossians 2: 14 & 16-17 by saying that we should not allow anyone to judge us on this issue. Explain, please!

These verses are among the most misunderstood and misused in the entire Bible. However, we do address this question on the site, so following is the link to that page: