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It just seems your idea of “meaningful” is self centered. It’s possible to believe in something bigger yourself and that bigger thing not being God.
I don’t have to be alive to know my actions had meaning, as long as someone is alive who were affected by my actions, they still have meaning.
It’s interesting how many parallels they are whether you look at the universe scientifically or religiously.
Scientifically, the more you understand the vastness of the universe, the more you understand the unlikelihood of us ever coming across intelligent life besides ourselves.
Some people say without life on earth, the universe is meaningless. I tend to think that without meaningful life on earth, the universe is meaningless.
On a grand scale, the physical earth is almost a spec of nothingness, however because of humanity, it is the also most important thing.
This is the driving force behind studying the universe. We can see 14 billion years worth of it. In that time, planets, stars and galaxies have been born and died. Our sun and planet are no different. They will some day expire, and not because it drag queens.
The more we can learn about the life and death of other planets, the more can understand our own, and the better chance we have of continuing life, the only life known to man, after the expiration date of our planet