There are three distinct answers tothis question:

1) There is no intrinsic meaning, so forget it or weep

2) We are here so the universe can be aware of itselfrequired.

3) 42

 1.The fact or state of existing; being 2. The fact or state of continued being; life: our brief existence on Earth. 3.{a}All that exists: sang the beauty of all existence.3{b} A thing that exists; an entity. 4.A mode or manner of existing: scratched out a meager existence.5. Specific presence; occurrence: The Geiger counter indicated the existence of radioactivity.These are some definations of existence.Our existence is to prove that ..here the universe exists..!  Other then humenbieng who thinks for this universe..?