Everybody wants to go to heaven but nobody wants to die afterall.
I don't want to go to heaven, thats boring and also temporary, I'd rather achieve the highest perfection, the highest power, freedom, enjoyment, happiness, etc....in this lifetime...
Heaven is temporary, but the kingdom, the unmade, the unborn, etc..is eternal...
Also the same argument was made thousands of years ago (atheism is really just an ancient faith-based belief system) by an atheist against Buddhism:
"Once everyone was seated, Prince Payasi said, "Reverend Kumara, I maintain that karma does not have results. I believe that there is no life after death, no world beyond our own. I think that angels and demons are things from a child’s dream."
"Hah! Holy men such as yourself can wax quite poetically about the wonderful life they will have after death – about the myriad comforts that await them in some other realm. But notice this, Reverend Kumara: not a single one of them desires pain, nor death. They all strive for comfort and to live for as long as possible. If such heaven worlds exist and these holy men can see them, why don’t they take a knife to themselves, or drink poison, or jump off of a cliff, and hasten their journey to these heavens? They don’t! That is another reason that I do not believe in other worlds, in angels and demons, or in Kamma."
Kumara (Gautama Buddha's disciple) replied:
"Hmm. Take this parable and consider it carefully: There is a rich man with two wives. One wife is pregnant, and the other has a son of ten or twelve years. This rich man’s heir would be the son. This father then died, and the son went to claim his inheritance, but the pregnant mother pleaded, "Wait! Wait until my child is born! If the child is a boy, he gets half of this wealth, but if she is a girl, she becomes your servant." Desiring to have half of the wealth for herself and her child, she made this same plea whenever the heir came to claim his inheritance. Then, she took a knife and tried to cut open her womb, wanting to hasten the arrival of the child, and thus her wealth. However, in doing so, she destroyed both herself, and the unborn baby.
"Likewise, if a man ends his life to seek the fortune of other worlds, he will not only have destroyed this life, but the next as well. You do not eat pasta before it has finished boiling, or you will hurt your teeth and stomach. The merit that holy men create grows only better as they live longer. Now, Prince, admit that you are in error." (Payasi Sutta)
This scripture is part of pali canons was written around 250 BCE...ancient atheism is just the same as the modern faith-based atheism..