1. It means to enjoy life fully as one's life is finite and soon enough everybody dies.
2. In the sense that one' life is coming to an end, so the person has to enjoy everything life has to give them until the end and at the same time one can get frustrated with the idea of coming to the end of their lives.
3. It means that mostly everybody does what they can do to extend their lives.
4. Maybe people who realize that they haven't lived fully and want somehow to doit now.
5. It means that their good deeds could have made their lifes easier.
6. Of furstrated people who regrets some things.
7. It means that they enjoyed everything they could but later on noticed that it cannot last forever.
8. People who enjoyed life to its fullest but then noticed that everything is futile.
9. A man who is in his deathbed and is getting some comfort as there is no escape from dying.
10. Because they want to live more, they want more life.
11. Light is life, as we see things because of light and darkness means death because we cannot see anything in the absence of light (darkness).