First, what is your life purpose?
To have a loving family. To enjoy every day as if it were my last.
To be fulfilled, content and happy.
Second, What do you think about die? What will happening when we die?
When you die your cells die, chemical reactions that support life stop. You decompose.
Your energy content is returned to Earth so that other life forms can benefit from it.
The last is, Why are we life in this world?
Why we have life?
Shit happens. It happened on Earth and it probably happened elsewhere in the universe.
What is the purpose of each life form?
To procreate. To become more complex over time.
Why is the world still stuck upon some sort of stupidity. Instead of wasting our time thinking about the purpose of life why don't we make something useful out of it. That would be interesting and productive as well. Our world is getting more stupid and thinking such questions which has no sense at all.