So really I would like to hear a good reason why it would be the end of the world if FFXIV went f2p?
In general it's because F2P attracts a certain kind of crowd. A crowd that would make even alot of the "sterotypical" WoW players gag. I don't mind some F2P, like DDO... but the thing is, in DDO I was far enough ahead that I could avoid the asshats that generally lurk in FPS games. In XIV with it being so new, we'd have no where to run and hide. Assuming we ever got an ignore function, it would quickly be filled.
As a concept, I really like the F2P model. In practise though, if you want to actually enjoy the game... ALL of your friends need to have the same content you do AND you may find yourself wishing certain people didn't have access to other areas.
Wanna see F2P that works well for the community too? EVE Online. IF you want to play it as a F2P game, you can pay for your monthly sub with in game currency. If you want to continue to gain large quantities of said currency, you'd best not **** off the population or your income will suffer.
To be fair to DDO I only played it for 2 more months after it went F2P, but in that time I found myself unable to enjoy the started zones. Beggars everywhere if you walked around in higher end gear, it was alot quiter if you stripped down when in the market or starter city streets. It may have eased off that a bit by now, but for me it was not an enjoyable experience.
Ultimately it can create a you and them situation... them being the types that have nothing or everything, and you being too cool or not cool enough to hang with them because you may be the type who only has some.
FFXI:Sylph - Perrin 75 Hume THF; Retired (At least from my use any way)
EVE Online:ScraperX; Retired
WAR:IronClaw- Peryn SW;SkullThrone- Grymloc BO; Retired