If you were to write out the full name, which way are you more likely to do it?
If you were to abbreviate the name, which way are you more likely to do it?
If you were to refer to a game just by number, how would you do so?
Would your answers to the above change based on which game in the series you're referring to?
So for everyone who chose the first option for the second question, i'd really like to know why.
I can understand the logic behind writing out the roman numerals when doing the full name. I don't agree with the conclusion, but i understand it. The title is written that way so that's the official name. The part where i disagree is that everyone knows they write it that way just because it "looks classier." When discussing the games i don't feel any need to maintain the facade of coolness by making myself go through the extra work of writing out the roman numerals. I don't think anyone will claim that "Final Fantasy VII" and "Final Fantasy 7" don't mean the same thing.
The part i really don't understand is everyone writing out FFIV, FFVIII, FFIX, FFXIII, etc. As in, i don't even understand the logic behind it in the first place.
You are abbreviating the name! You can't make any claim to retaining the dignity(?) of the original title when you're reducing the whole "Final Fantasy" part down to just "FF." So why insist on writing out the roman numerals, which are usually longer and almost always more difficult to read than the arabic equivalents? The only case where it makes some sense to do the roman numerals is FFX/FF10. It's one character instead of two, and you don't need to do any addition or subtraction in your head. Even then i'll usually stick with FF10 out of habit, just because it's so much easier to do the arabic numbers in every other case.
It's especially noticeable when doing lists of the games. "I like FF4, FF6, and FF8 but i don't like FF7 or FF9 or FF13. FF12 and FF10 are okay though" is a lot clearer than "I like FFIV, FFVI, and FFVIII but i don't like FFVII or FFIX or FFXIII. FFXII and FFX are okay though." The second one just starts turning into alphabet soup.
And i don't know about anyone else, but for me not only do the roman numerals take more work to read, they also take more work to write, irrespective of the number of characters involved. As minuscule as the effort is to come up with the roman numeral equivalent of numbers, that effort does in fact exist.