I'm struggling to understand the purpose of life without God. Atheists, do you simply chase happiness and contentment with your days? Is that all there is without God?
I suppose. But it really depends a lot of what you are calling "God" exactly. I suspect that you are subsumming into the idea much that we do not.
When I was a Christian , I served a higher power and had a purpose. My actions and thoughts affected the metaphysical world. My purpose was to serve Jesus Christ and help reclaim the world for Him. Even after letting go of Christianity, still retaining some belief in God and karma, I served a higher purpose. The reclamation of this world for the benevolent yet not omnipotent God.
Now as I question my belief in God altogether, I am left wondering what my purpose would be without serving a god. My whole life revolved around my spiritual practice, and I am losing it. I don't see the point in life without a god. So perhaps I will be intellectually dishonest to myself and return to Christianity. Or perhaps many other things. Can become a polytheist or animist. Those would give me purpose too I think.
Not all people - and quite possibly not even most people - are suitable to or even compatible with an attitude of serving a deity.
But if I were atheist, I fail to see how I would carry on. God has been my crutch since forever. Knowing that sky daddy is watching over me and taking care of me and has a plan for me is a powerful, motivating belief. Why do you think so many fail to ever let the God belief go?
There are a few powerful reasons, which are to a considerable extent shaped by social environment.
Here in Brazil there are many Christians indeed. Far too many, with far too much influence. So many and so careless with their voices that a huge contingent of Brazilians has learned to deal with them by pursuing the quietest possible disregard. That resulted in a common perception that, lacking clear reason to the contrary, the average person should attempt to humor Christian claims without confrontation even if there is no respect whatsoever for the claims themselves.
Odd as it is, we Brazilians live in a society that considers it rude to clearly deny belief in some variety of the Christian deity unless some attempt is made to control the listening public. How that can be made without some combination of censure and lying, I can't begin to guess.
Which is one reason for the persistence of theism: some societies directly demand people to pay at least lip tribute to it. Even when larger society does not, more proximate circles often do. That by turn causes further confusion and censure, as people learn that keeping the appearance of belief is a social demand even if belief itself can't be changed by demand.
It is really very difficult to make accurate statements about numbers of believers and unbelievers, because there are such strong taboos, prejudices and fears against gauging both superficial appearances and deeper feelings about either of those two concepts.
Debate point: there is no point in life without God.
That is not true, as any atheist will promptly tell you.
Someone told me that the point is to leave the world better than you left it for future generations. Perhaps that's true. But you're dead and unconscious, so so what. I'm just negative maybe.
People's motivations and emotional drives vary considerably. Some of us atheists, quite possibly most, find it preferable to put our hopes and faith in the contributions that we expect to survive ourselves than in anything that relies on entities that we do not find convincing.
The preacher of Ecclesiastes questioned the point of life. I resonate with him.
Maybe I just need to accept that I can live a simple life. No need for a higher grand purpose. Maybe finding contentment in simplicity is the point of life.
For many people it is indeed.