Thank you fbaezer
Well, being brought up in Scandinavia, I've sadly forgotten how to write in Persian (or Arabic), and I now only speak Persian.
If I communicate with other Persians over the net, I do so with the Latin alphabet.
I do know this, that the Persian, striving to differ from the Arabs, adopted new letters into the Arabic alphabet, and then called it the Persian alphabet.
Many Persian nationalists want to return to the ancient Persian alphabets, which I do agree with. I think you might have a point fbaezer. But it might not be out of grammatical inconvinience it is troublesome to read Persian in Arabic alphabet, it's rather the fact that the alphabet is Arabic rather than Persian.