This is the mental barricade that will defeat "Single-Issue-Creationists" from ever sucessfully witnessing to scientific intellectuals. It is better to offer the truth of Christ's sacrifice and show the evidence of an eteranl love than it is to hit people over the head with a six-day creation as the only tool in your tool box.
Which has been done many times on this forum, to no avail.
People don't believe because they choose not to believe, not because they can't.
The excuses they offer are just justifications for that decision.