The imitation game

Quite an awesome movie which tells of Alan Turing's role in the Second World War. Turing was a mathematician/cryptologist, who devised a computer of sorts to break the Nazi's Enigma code. When one thinks of wars, one always thinks of the "frontliners" as the war heroes but the brains behind the scenes are equally important. Anyhow poor Turing, for all his war efforts, was eventually persecuted for homosexuality and had to go through chemical castration. He later killed himself (debatable) at age 41. 

It is probably unthinkable now to prosecute/persecute people based on their sexual orientation but I wonder what the origin of moral codes/law is. How do we decide what is right or wrong, how do we decide which wrong is a heavier sin than the other, how do we decide which sin is punishable? 

How we judge morals are often based on what religion dictates as right/wrong. If following that line of thought, then yes homosexuality is a sin. But so is murder, stealing, lying, adultery, hatred, etc. Is one sin heavier than the other? We discussed recently during BS that all sins are created equal. Hence, it is not true that Christianity rejects homosexuals but rather it views homosexuality as just one of the many sins of mankind. Does a church reject someone from entering its doors just because that person had told a lie the day before? Obviously not, otherwise, all churches would be devoid of a congregation. But then again, at the back of our minds, we human beings do weigh and compare sins. We often ask can a serial murderer be pardoned if at the end of his life, he begs for forgiveness and accept God? A lot of us have issues with this because of the unfairness of it. Would we feel the same way about a serial liar? Or a serial "angry" person?