Through an accident of birth, I was born in a nation where I benefited from the economic prosperity provided by loving parents so that I could pursue my dreams. The nation into which I was born has granted me more freedom and prosperity (by means of those freedoms) than can be found in most countries around the planet, thanks to the wisdom and foresight of those who created this nation. There can be no doubt that I have many people to thank for what has been a very happy and fulfilling life. If I'm run over by a truck tomorrow, it will have been all of you who made my time on Earth so delightful. I offer my gratitude to you all.
But ... there's a missing element here. Through some mysterious accident over which none of us had any control whatsoever, we came into existence through a serious of "miracles" that we simply don't understand. Science has shed light on the process, but much remains unknown and could remain so for a long time. Somehow, a universe was created billions of years ago. Within this universe, stars formed, organized themselves into galaxies - many of those stars blew up in gargantuan explosions that seeded the universe with the heavier elements that today form the matter from which we and our Earth have been made.
On this Earth, that matter organized itself into life somehow, which then evolved over billions of years to create us and the environment which makes our lives possible. Within the Earth's environment, I've been fortunate enough to have the means to travel and to chase storms. By this means, I've experienced many times the wonder and awe of the natural world around me in ways that transcend mere words, transporting me into a place where I can lose my self and feel deep in my mind that wordless joy at knowing I'm a part of something that surpasses all understanding.
As Robinson Jeffers has put it:
To know that great civilizations have broken down into violence,
and their tyrants come, many times before.
When open violence appears, to avoid it with honor or choose
the least ugly faction; these evils are essential.
To keep one’s own integrity, be merciful and uncorrupted
and not wish for evil; and not be duped
By dreams of universal justice or happiness.
These dreams will not be fulfilled.
To know this, and know that however ugly the parts appear
the whole remains beautiful. A severed hand
Is an ugly thing and man dissevered from the earth and stars
and his history... for contemplation or in fact...
Often appears atrociously ugly.
Integrity is wholeness, the greatest beauty is
Organic wholeness, the wholeness of life and things,
the divine beauty of the universe.
Love that, not man apart from that,
or else you will share man’s pitiful confusions,
or drown in despair when his days darken.
Many people choose to create an anthropomorphic entity - a deity - to whom they attribute all the wonder around them. Many people choose to let a self-appointed clergy tell them how to worship this deity. Many people choose to become slaves to a religion, which can manifest itself in terribly cruel ways - justifying their excesses, their violence to others, their lies, their contradictions on the basis of those evils being the will of this imagined deity. They then express their gratitude for their many blessings to this deity. I choose not to follow this path.
But then, to whom should I be grateful for the many blessings provided by the universe in which it's been my good fortune to be born? I don't believe there's any being to whom I need to express my thanks. I don't believe the universe knows or cares about what I think, but to be allowed to glimpse the majesty and power begs for a target for my gratitude. The very indifference of the universe to me and my petty concerns seems to fill this disembodied spirit with something I admire. The universe has been about its "business" for billions of years before me. That "business" will continue for billions of years after me. Further, I don't feel any need to ascertain any personal meaning in the business of the universe - for me it's enough to know that I'm a player in something that I'll never understand. A part of the whole, not me apart from that whole.
What amazes me is that through processes I can't begin to fathom, I've been granted a brief time when I've become conscious that I'm a part of this majestic drama. We humans are only infinitesimal specks within this grand tapestry, but somehow, for no evident reason, we've been given the privilege of awareness of our connection to this vast process, and the curiosity to seek an understanding of it. We are self-aware matter - and I feel a deep gratitude for being given this existence. The fact that I can't express this gratitude to some being is irrelevant. But I'm grateful, nevertheless.