The Galatian believers had embraced adding requirements to the gospel, specifically circumcision. They said that we needed to accept Christ but we also needed to be circumcised. Paul said in the strongest terms available that notion was accursed, not the gospel.
What would he say to us today? What have we added? I have been told by some folks that in order to be saved I had to be baptized. Others have told me that I was not saved if I have not spoken in an unknown tongue. Still others have suggested other additions, like I had to be in their group because it was their group that had the truth. I wonder if Paul would have marveled?
Personally, I am not real interested in being accursed. It seems to me that it might be important to make sure that I know what the gospel really is and that I neither add nor subtract from it.