I consider the liberation of your mind from the lies of superstition to be among my ethical duties as a person possessing exceptional intellectual acuity who is also a compassionate citizen of this hivemind we call the internet.
Atheism is a superstitious religion just as much as any other theist belief system, failing to recognise that Atheism is also a superstition would be unethical, or sign ignorance. Since there is no definitive proof the ethical stance is to be agnostic. i.e. keep an open mind. While there is no proof for intelligent design there is an abundance of circumstantial evidence to support it. Just because we have no comprehension of the universe outside of our very limited shared experience, we should not allow our own limitations to prevent others from appreciating life's mysteries to their fullest.