Or in my case, I ended up inheriting two spare living room chairs when my grandparents passed away and after we moved into their house, my fiancee and I use them in our computer room. ^^ Computers + Comfy chairs = win.
I'll grant you I like my 55" TV downstairs for most games, but I'd still rather keep FFXIV up here on my computer, where I have a second one next to me to look things up, instead of needing to situate myself in my living room with a keyboard on my lap, mouse on the end table, and laptop next to it for IMs/looking stuff up.
To each their own.
If FFXIV is going to be windowed/alt-tabbable, as evidence so far has been supporting, I don't think you'll be needing both computers, hopefully. :)
Must say, though, unless you're using a controller for your PC, using a mouse requires you to stay seated in more or less the same position for hours on end and, comfy chairs or not, that gets annoying. You don't need a mouse period if you're playing on a console in your living room. I prefer to lay in bed while playing with a wireless controller and keyboard and to address the above comment, FFXI text was just as easy, if not easier, to read on a television for me than on a computer monitor simply because everything was bigger. It also produces less eyestrain because I'm not forced to be so close to a screen for long periods of time.
This is just where personal preference comes into it again.
I like to play my games in full screen; I hate them in a window. And it's more preferable for me to have maps/strategies/IM window/music player open on a second computer with a second keyboard and mouse than it is for me to alt-tab back and forth.
Not saying I'm against a windowed option (That I'll never ever use) or the ability to alt-tab (which will also have limited use at best) but I'd prefer it the way I'm used to it.
And as for the controller... I just like my mouse better for precision and function than a controller. I won't even -touch- an FPS game on a console. Anything moddable (e.g. FFXI .dat swaps, or any game like Oblivion/Fallout/NWN that has massive amounts of free, user-created content) also becomes "PC only" for me.
The only things I use my consoles for are games where no typing are required, button mashing is more important than precision, and the thought of never being able to add to my game does not affect me (Rock Band/Guitar Hero were exceptions for which I've downloaded extra songs, but I almost never get any DLC for anything that isn't on my computer). I'm well aware that I have hook up a keyboard to my other systems (and have) but once a keyboard becomes required for a major portion of the game, or if the game will require updates/downloads (or will have a large amount of them), it has officially entered "I will only ever play this on PC" territory for me.
Also, for the love of me, I cannot figure out how FFXI was ever even playable without a keyboard without driving yourself insane, but that's another matter. I know people have done it; I just can't picture it.
So yeah, it's a matter of opinion. If you like a console better, I won't try to talk you out of what you're comfortable with. But I don't play anything on consoles that involves online multiplayer or a keyboard. My console gaming is limited to single player games that require nothing more than the disk that came in the box, and the controller that came with the system (Again, RB/GH being the only exception).
I still don't even have a PS3 because there are no games on it I want enough (That aren't also available on PC or 360) that I'm willing to fork out 300 bucks for a new system. Nearly every game that interests me is for PC, and the few that aren't are 360/DS/PSP.
Just my own preference. YMMV.