NT scholar, Clarence L. Goodwin Chair in NT Language and Literature at Butler University correctly regards YEC as a menace to Christianity. His latest blog post on the subject as usual hits the spot:
Young-earth creationists claim that the being who made the Earth and humankind is neither trustworthy nor honest. Their concept is of a God who makes the universe look like it is a particular age, and the Earth look like it is a particular age, even though they were created much more recently, and then condemns people for believing that evidence.
Young-earth creationists do not believe the Bible's testimony (in particular in Romans 1) that the Creator can be known through observation of and reflection on the created order.
Young-earth creationists believe that the Creator responded to human sin by introducing flesh-eating bacteria, killer viruses, hurricanes, tornados, floods, and carnivores into the world, just to name a few things.
Young-earth creationists believe that it is perfectly acceptable to repeat lies, promote misunderstandings, distort scientific publications, demean the character and credibility of Christians as well as others who work in the natural sciences.
You can read the rest here.