It doesn't exist.
A common misconception.

the reason or purpose for our existence

your not going to find it here.

42.

Not a joke.

Each person has needs/desires which are triggered by events. The meaning of life is to re-evaluate and find ways to address these needs.

Desires can be physical, psychological and social. Many needs are short-term but we should also find long term ones.

?????

the meaning of life is to question lifes meaning despite the fact that its true meaning cannot possibly by revealed while one is living - therefore its meaning is and always will be unknown as long as we continue to live and possibly beyond