Hitler, Goebbels and Goring were willing to die for Nazism.
By your logic " It should prove that there is more to it though and at least be respected if you don't want to believe it."
It will be a great day for the world when humanity, if ever, realises that there is no need for made-up gods and superstition.
My $.02.
If there is no belief in an afterlife, then it is only logical to maximise the utility of this life. As the world we currently live in is finite, there will surely be insufficient resources. How will that be a great day for your descendants or for humanity?