If all religions say...

[DC]

...that you'll go somewhere bad if you don't believe in them, then what's the point of believing at all?

Example: hypothetically, there are only 3 religions for ease of typing. They are Buddhism, Islam, and Christianity.
Let's say Guy #1 is a Christian. He's going straight down because he's not a Buddhist or a Muslim. Guy #2 is a Muslim, and he's going down because he's not a Christian or a Buddhist, and so on.

Basically, if you don't believe in all religions, which is impossible, you're going straight to hell. Therefore, there is no point in believing in anything because you're going to hell no matter what.

Note: I say "somewhere bad" at certain points because different religions call it different names.

[lllllll]

o.o My whoever he is you are right.

[The Dark Wibble]

And that can prove the non-existence of God...

[timmyboy]

Yup, that proves how different people have different ideas of a 'God'.

[Flamekieser]

I have done some research and it turns out that there is a religion called Unitarian Universalism that incorporates many basic religions such as Buddhism, Islam, and Christianity. Although I am not sure many religions it encompasses it's at least somewhere to start that allows you to take part in multiple religions.