What does it all Mean ?

"Is the definition of existence, conscious thought?

Example: I exist but the question is why do I exist?
And to what purpose is my existence?
(Discuss)

Further topics within the remit of this discussion:
Sentience The Ability to perceive or feel subjectively
Sapience Can be defined as wisdom in this discussion

Thoughts upon:
"I exist but what does it matter?
I'm Doing the best that I can..."

(With thanks to I.Curtis for the inspiration )