Is life meaningless? Honestly life our lives are meaningless.
If you stop to think what are we, what am I, only one person in 7 billion.
Both me and you know I'm not spatial in any sense, nether are you, and nether was Einstein. We are all resumed in one in 7 billion, that live in a planet in 7, that orbits a star on infinity. So, truly, what meaning does my, or your, life have?
There is no meaning and no big picture in our existence. It just doesn't matter. All that the scientists and all the progress we made till now, only matter to our world, but not to the hole picture. So, in the end, wen everything is over, and there is no human nor any documentation of our achievements. What meaning did they had than.
Even though we have no meaning and all we do is meaningless. There is meaning in our vanity, because we are meaningful for each other, all the achievements we have are meaningful to us. That is what keeps me going, the idea that things are meaningful to me and to others, even if they are meaningless in a hole.