What I'm saying is that ethical living may lead to (better) after-life! If not only the good consequences of ethical living in this life, that is, both for society and family and friends and yourself, ethical living proves valuable (given that there may only be this "cold grave")!
Prem. 1: Ethical living -> hope of (great) after-life "and possibly more, i.e., God/Heaven"
Prem. 2: If not (great) after-life -> ethical living -> Very good consequences in this life, society, family, friends, yourself
Conclusion: Ethical living proves worthwhile in every respect!
What if ethical living proves crucial for all this hope in God or what if there's something fantastic in death by living ethically? What is the responsibility for those against this? It seems they risk very little by insisting on a "cold grave" and being "scientific" despite the very stories of the many Near-Death Experiences and Out-of-body experiences! Why do they bother if the answer isn't to spread the corrupt mind?
(By this, finally, I hope to shove all Atheists into Secular Humanism or Humanism with Atheism!)