Its definitely not necessary for FIFA though. I remember playing 06 and 07 like a boss with keyboard. Havent really followed the series since, but from what Ive seen the console versions are far superior now while the PC ones use old engines and mechanics.
No longer true. From this year the PC version is the same as the console versions. Last year was the first time they used the new game engine on the PC version, but it was missing some of the new features. Now the PC version has all of the same features, mechanics and engine.
Some people do play using the keyboard (reminds me of my ZX Spectrum days) but in doing so you're missing out on 360
o control/passing and a huge range of available skill moves hat require the second stick.