thedistillers wrote:1) Human beings aspire to be happy. The logical consequence of atheism is despair and nihilism. If atheism is true, there is no reason to care about truth, or anything else, so even if God doesn't exist, it's more rational to believe and hope God exists, to live a happier life.
It does not logically follow from atheism that a human would suffer despair and adopt nihilism. Many Buddhists, for example, are atheists and they definitely do not ascribe to Nihilism, and many atheists are quite happy.
It is also not logical to state that "if atheism is true, there is no reason to care about truth or anything else." We care about truth for reasons quite apart from whether a god or gods exist. We care about truth because we need to know what is true and not true to do many of the things we do on a daily basis, and to interact with other humans.
thedistillers wrote:
2) The universe had a beginning.
Maybe, maybe not. We don't know for sure.
thedistillers wrote:
It is irrational to believe a universe can start to exist without a cause, for ex nihilo nihil fit. Only what we call "God" can be the cause for the universe, for the cause of the universe has to be personal and immaterial. Therefore atheism is irrational.
There is no basis for the statement that the "cause for the universe has to be personal and immaterial." Why can't it be impersonal or material?
If the universe had a beginning, there was a cause, but that doesn't mean that the cause was a god or an unnatural cause. Just as a solar system had a beginning, but had natural causes, so too can a universe have had a beginning and a natural cause.
thedistillers wrote:
3) You can only make sense of the universe if it behaves in a predictable way. If atheism is true, there is no rational reason to believe the universe will continue to behave in a predictable way. We cannot make sense of the world we live in if atheism is true. Therefore atheism is irrational.
Actually, this is the opposite of reality. If theism is true we can't be sure that the universe will continue in a predictable way because the god or gods may intervene at any time to make it behave in arbitrary ways. Atheism removes that avenue for arbitrariness by removing god or gods.
thedistillers wrote:
4) There is no rational explanation for the Gospel accounts, unless Jesus really rose from the dead. Only God had the power to raise Jesus from the dead. Therefore God exists, and atheism is irrational.
There is most certainly a rational explanation or explanations for the gospel accounts that would involve Jesus not really rising from the dead. One example would be that the gospel accounts are myths, just like the accounts of Hercules descending into Hades or Zeus impregnating Danae as a shower of gold. Someone wrote them down, perhaps sincerely believing them to be true, but they aren't. There is a rational explanation for you.
thedistillers wrote:
5) Atheists can't even prove their position, using evidence and logic. Therefore atheism is irrational.
Sure they can. Atheism is in its broadest sense a lack of any belief in a deity - it's a suspension of belief awaiting evidence from those asserting that one or more deities exist. The latter having failed to prove their case, atheists simply do not accept the assertions of any of the individuals asserting the existence of a deity or deities.
In other words, it is just as rational as a christian rejecting Islam because of Islam's failure to prove its claim. An atheist rejects both.