So to give you guys a glimpse of what my hot/action bars look like in FFXIV here you go (yea I took this while flying back to the main city on my white fat chocobo after taking those screenshots). Yes, I pretty much use every single one of those abilities in the middle three bars (the left bars hold other things not pertaining to my job and are shared between all my jobs). Some more then others but for the most part they all get used at some point.
Yea we have a lot of buttons to press (my usual rotation is 18 buttons, give or take a few depending on the engagement).