No one truly believes that accidental materials gave us everything including our non material human entities of mind, will, love, reason, logic, abstract thinking, etc... Its just a convenient charade so One can be his own 'god' thereby doing whatever he feels like ....even harming himself deliberately or due to consequences of bad decision making. Failure = Success doing the wrong things .
Being 'an atheist' is not a reasonable nor logical position....and harming Oneself deliberately is an affront to the Creator and to Oneself who has the responsibility to care for him/herself. Its called self preservation and its a concept the Creator has given all of us because we are wonderfully made . Read Psalm 139 for just how wonderful.
Believe in and follow Secular Humanism, and watch how fast a Person goes downhill in life because he cant even have basic respect and dignity toward Himself. This is what we were all brainwashed with thru the public school system , but now we are done with the indoctrination, we can get back to loving God and appropriately loving ourselves .