Many people live without believing, and do not feel any kind of "emptiness".
Sometimes there's no feeling of emptiness because all 'life-space' is filled with all kinds of things. When you take that away, you will feel the emptiness. I know, this seems obvious (and it is, obviously
Let me try to explain. People in general don't like to be alone. We can endure being alone for a couple of minutes, or a few hours, perhaps even a day, but after that we really feel the need to be with friends, family, or pets even. When you have all time filled with all kinds of things (music, television, work, hobby's) you are much more likely to endure being alone for days, or even weeks.
Some religious people are 'into' fasting. Which is for the same reason. When we are not tied to all kinds of things (food as the obvious example, but also music, or movies, or even society (hermits)) we are more likely to open up for spirituality.
I had a conversation with some friends about it lately, and one of them told me : "I do not know if I believe in God, or have religious beliefs. The fact is, we're here, we don't fully understand why, nor do we know for how long; there are many things to do, to see here, it is like a trip. So, let's just make it as pleasant as possible for us and the others."
Carpe Diem. Seize the day. Which in itself is not bad. When I quote the Bible:
"Yes, if a man lives many years, let him rejoice in them all." Ecclesiastes 11:8a
In other words: make the most of it. Enjoy it. Carpe Diem.
But right after that:
"But let him remember the days of darkness, for they shall be many.
All that comes is vanity." Ecclesiastes 11:8b
The darkness comes. In the end, we will all die. Don't forget. Memento Mori.
It does not mean this person doesn't ask themselves metaphysical questions, it just means they can live without religion. I guess it depends on the person - I understand many people need to believe to keep on going ahead.
Yes, I can understand this vision. But this means that christians or muslims or jews are actually weak. They can't keep on, they need belief to keep going. Atheist are strong, they don't need a god or belief.
I'm almost sure you won't agree, but I think we are ALL weak and need belief, or actually God, to make it till the end (or beyond the end: eternity). The Atheists, the Christians, the Muslims and the Jews. We are all weak. But only the Christians, Muslims and Jews know they are weak. An Atheist doesn't like to be weak.