The concrete evidence of the quote "Ignorance is a bliss." Isn't religious people tend to be more happy and joyful?
Precisely.
Atheism is not a religion. A-theism is simply the absence of Theism. That can take any number of forms.
Pretty hard to generalize, wouldn't you agree?I am neither an Atheist nor a Theist. I am a bot.
"I have no
GOD in this fight!"

The Atheists I know do not "hate" religion.
Religion is simply a step along the way for the truly Enlightened.
What is a religion? A chunk of ground isn't a religion. A book isn't a religion. A
religion is when a person makes something a religion in his own heart and mind.
The adamant chiming of atheists that atheism isn't a religion is itself a religion in those atheists, a religion that has as part of its doctrine and dogma, statements and beliefs that atheism isn't a religion. In part, atheism is a religion of non-religion.

As an Atheist that's when I agree with you, religion is a made-up story of a man and he do really want to recruit his religion because that's what he feel and what he believe. Sure you can have you own religion but when you try to shove your perspective with others then that's not fair and good enough.