Should Christians have actually abandoned so many Old Testament rules?

The law has not ped away, it has been fulfilled. Christ fulfill all the requirement of the law that we could not. This is part of what we are placing our faith in when we place our faith in him and what he has done. This is what the book of Galatians was addressing. For that matter it is take up in Romans and many other of Paul's books. We are no longer under the law but under grace. What to talk more drop me a line.