Honestly, the metaphor "pink balloon of time" is so evocative and unique. You breathe into a balloon to fill it up. After a certain number of breaths, the balloon pops, or else floats away from you, i.e. you die. A balloon is fragile, like the limited time you have on earth. But balloons (especially pink ones) are a symbol of joy too, common at birthday parties and other celebrations. Life is a celebration, short as it is. Most of all, balloons are light, which implies both that life is insignificant, but also that it shouldn't be taken overly seriously.
Honestly, the metaphor "pink balloon of time" is so evocative and unique. You breathe into a balloon to fill it up. After a certain number of breaths, the balloon pops, or else floats away from you, i.e. you die. A balloon is fragile, like the limited time you have on earth. But balloons (especially pink ones) are a symbol of joy too, common at birthday parties and other celebrations. Life is a celebration, short as it is. Most of all, balloons are light, which implies both that life is insignificant, but also that it shouldn't be taken overly seriously.