Firstly, go to bed people!! lol.

And secondly...

Is it right / fair / meritious to raise your child in a particular religion as the one true religion? For example, to raise your child as a christian / catholic / buddhist ONLY, and not introduce or teach other religions. To clarify, the opposite of this would be to attempt to educate your child about all religions, and allow them to choose for themselves when they are older.
I think it depends on your beliefs.
For the first part, raising them to believe that there is one true religion... I think this is right (if you're religious that is) and what I plan to do. I am Christian so I do believe that it is the one true religion and therefore if I taught DD that it wasn't the one true religion I would be lying because it's not what I believe. However, I do think that I should also teach her about other religions. I won't be going into the details of everything (because I don't know them myself) but I will be telling her what I do know and that there are others that believe different things and trying to teach her tolerance for others as I would in all other areas of life.

If I wasn't religious I think I would teach my child about all religions so that they could choose themselves.

So basically, I think either way is a right / fair / meritious way to raise your child depending on what you believe.