Disturbing 9/11 documentary

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What is the meaning of life?

Not feeling suicidal or anything, but recent events have set me thinking about what it's all about. Is it about learning physics? Or aiming to become a 20 kilobucks/month tenured full professor (ie. my boss)? Is it becoming another cog in the wheel? In particular, a cog in the homo economical system of singapore? Or perhaps getting married and give unborn kids the gift of life so that they too can ponder this point? Or end up as cogs as well? Or what?

Please, feel free to leave your take on this.