The optimal FOV depends entirely on how close you sit to your monitor and how big/wide it is... The reason consoles have such a crap FOV is because they expect you to sit further back from the screen. The closer you are to the screen the bigger the FOV has to be to feel natural.
Also you can't go TOO far or you're gonna start getting a warped view... But 90 is close enough to right for me... I can go as high as 120 but past that it starts to get weird... and of course yes, seeing more is better, but unless you're playing hardcore competitively I'd say just go with what you're comfortable with.