If Life is Meaningless Anyway, then What's Wrong with Religion?

[Mister Agenda]

What prevents you from establishing your own meaning?

If the truth is that life is meaningless, then any meaning I assign to life is going to be fictional.  So if I do establish my own fictional meaning in life (and it will inevitably be fictional) then why is that more noble and enlightened than someone whose meaning comes from a fictional traditional religion, like Islam or Christianity?

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How did you establish that life is meaningless, and that someone finding their own meaning is a fiction?

It seems to me that something can only mean something to someone. You're someone. Life can have meaning for you. It doesn't necessarily have to be the same meaning that others find. There's nothing about the word 'meaning' to indicate that it should be considered anything but subjective, the idea of an 'objective meaning' is self contradictory.

People don't have a purpose like a hammer has a purpose. That doesn't mean a person can't have purpose.