First thing first, Bible have always preach modesty in all our ways as Christians, these days, I have seen many Christians frowning at other Christians because of their indulgence, if a bottle of alcohol (Star, Guinness, Wine, Gulder etc) is ok for you why not go for that and be fine if you can't take those sweetened ones like Coke, Fanta, Maltina etc Excesses of alcohol is what makes you look like a wretched before God, the Bible never talks about total abstinence but modicum of control in all our ways! In some Christian circles, if you touch a bottle of Guinness, you are automatically a 'sinner' Children of God, over to you!