Value of living

Can't help to think what is the main purpose of living in this world. Our existence itself has no significant value. U live to work or Work to live?

Sound very pessimistic huh? It's not as if i'm living a horrible, unhappy life. But the thought of building up one's life and end up lying in a coffin after less than a decade is not a very nice scenario at all.

I've been flying for slightly more than 2 months. Life has been "Great" so far. Good money. Loads of shopping. Partying every other day. Seeing different part of the world.
Sound wonderful isn't it? But wat's the ultimate goal in my life and what will all these "great" things lead me to? I am still trying to figure out.

Felt an urge of disappointment with myself yesterday. The things that i'm doing and the life i'm living... Looking at all the drunk cabin crew at an after-party shouting and debating over stupid topics, trying to attract attention of the opposite sex. And thinking that i'm one of them makes me sick. (not behaving like one of them, but one of the people who party all the time)

Come to think about it, if i continue splurging my money in this place, doing unconstructive things, i'll be letting everyone who loves me down. I'll waste all my time and effort.