i know i'm a newb but i've been lurking on this forum and craigslist for many months and 22k miles does seem like a far amount on miles for a fz6.
of course, 22k for a very well attended bike is vastly different than 22k for a bike that has traveled between 3-5 owners and barely gets regular servicing.
(and i'm NOT suggesting that the op's bike is anything but wonderful-i have no idea)
i just haven't seen all that many fz6s with easy running 50k mile engines.