[steve-b]

Sorry; I see your memory is failing.

Your original argument, verbatim:

There is no practical difference between using contraception and converting to Islam.

You can look it up -- either upthread, or looking for it as an example in a logic textbook under "Fallacy Of The Excluded Middle".

[wideawake]

Just as soon as you look up the word "practical" - it's an adjective and works as a modifier.