What I am saying, as should be obvious, is that the statements of anyone who has a worldview will be coloured to some extent by that worldview. This applies to me just as much as to Christians, atheists, and anyone else. People lack credibility when it can easily be exposed that their arguments are derived from a worldview, or beliefs resulting from it, that makes no sense.
What every person should try to do is to understand this, and try to be as objective as possible, weighing up evidence from all sides. That is what I try to do, and never claim that what I am saying is the truth.