@Dave70D @Ian W Unfortunately the camera manufacturers are all on a race to the bottom at the moment, with multiple cashbacks, trade in bonuses etc, all designed to increase sales and attempt to protect dealer margins. None of them dare to get off the bandwagon. This means that unless we buy gear at sensible prices it depreciates like a stone, bodies very quickly and lenses slightly less so. If it wasn't the Fuji lens price increase about 18 months ago, the secondhand value of the lenses would have taken a bigger hit as well.
Its easy to buy lots of stuff when offers are available as man-maths comes into play and the justification becomes simple. I've managed to go from 3 ILC Fuji bodies and 11 lenses to 1 body and 5 lenses, has my photography got worse, well I don't think so but others may differ!! I skipped the X-T3 as for my type of shooting I didn't think it offers me enough to upgrade, and my X-T2 still feels like a new camera.
@Dave70D my advice is after buying the 56mm, stop buying gear, use the money you would spend on gear on photographic adventures (I'd even consider selling the extra X-T3, unless you are going down the paid gig/wedding front), the X-T3+56mm plus X100F make an ideal combo for pub gig photography.