“Live a good life. If there are gods and they are just, then they will not care how devout you have been, but will welcome you based on the virtues you have lived by. If there are gods, but unjust, then you should not want to worship them. If there are no gods, then you will be gone, but…will have lived a noble life that will live on in the memories of your loved ones”—
Marcus Aurelius
Proof as to why arguing about whether there is a God or not changes nothing, in the end. Live your life as you would have others remember you by. If you want people to remember you by the people you hated, then go for it. Personally, I’d rather people remember me by the support I gave my friends, family and those causes I care for—and for the positive changes I wished to see happen to the world around me.
That’s the key to eternal life, by the way—live virtuously and you will live on forever—in the minds an memories of the people and, if your lucky, of the culture you leave behind.