aim of life- what is it?

a stupid question, right? yeah i know it is a stupid question and since the questioner is a stupid (me) there is no problem.
every person when asked about the purpose of life or the aim of his life tells "happiness" as a mantra to show that he is not like all those shallow people who say "money" "fame" "get hit by rolls royce phantom" etc etc.
but what i want to know is, what exactly is happiness? is it a momentary burst of ecstasy or a prolonged bout of elation? if we define happiness by these terms is it possible?

at times we seek and covet certain things and achievements. we feel that we will be happy when we get it. will we be?

NOTE: snazzed , sorry for the open plagiarism!!!!!

for example, when i wanted to buy an air rifle i was so passionate in my belief that i will be happy if i had it. but the actual obtaining of the gun and the subsequent shootings had been an anti-climax. the expected ecstasy will be absent and it may lead to our being deflated a lot.
similarly for a lot of instances when we anticipate the happiness due to something happening, when the something really happens the happiness may be too disappointing. it is like u expect trumpets , drums and showers of gold from the skies, when in actuality all we get a bloody honk from a passing car, and some lousy wind from under powered fan.
maybe we anticipate too much. we should always do anything being pessimistic about the results so that whenever anything good happens we shall be happy. indeed being happy is a mode of life but not the aim of life.
i think the aim of life is self satisfaction. just like end product of anything achieved is not happiness but even more self satisfaction. when u desire a bike for long and u try hard for it, the moment u finally lay hand on one as an owner it is indeed a joy par compare, but even more is the satisfaction of a victory well won, a sacrifice well made, a hard work well done.

as long as there is no self satisfaction will there be any happiness? a person can satisfy all his whims through dishonest ways being dishonest with himself more than others. he may enjoy all the pleasures he dreamed about, he may experience ecstasies unimaginable to rest of the people. but at the end of the day will he have self satisfaction? will he able to pat himself on his back and say " well done , old man"?
i believe , NO, but i may be wrong. after all, unfortunately i dont know any obscenely rich people , how much ever i may want to befriend them. so again my expoundings may be another form of jealousy.

that is why responding to a recent suggestion by an exceptional friend of mine about my gazillion dollar dream i said " perception of the thing is more satisfying for me than having the real thing itself". after all there is such a thing as enjoying utopia!!! after all if i had a mansion in malibu, an island in andaman, or a red hot rolls royce i will be more worried about the taxes and spares and maintenance of the confounded thing than be happy of being in possession of the thing itself. but when i dream myself as owning them i can edit out any unnecessary baggages but retaining the absolute joy of having them.
being a devotee of the matrix genre i am of the belief that "dreams need not be unreal"
so according to me purpose of life is self satisfaction.
now if some sage has/had a better idea please let me know. and please casticize me if i am wrong( but bear in mind that i am of a bearish countenance, huge and large, before commenting unfavorably).