It took many decades to engineer forks that were nice and compliant whilst also being strong enough, and arguably we are blithely throwing that all away just to have brakes that offer some marginal advantage for a tiny fraction of the time, and hoping that fat tyres will paper over the cracks.
I am concious throughout this discussion of my favourite bike, my Dawes Sardar, having disc brake-ready forks and stays. I've never fitted them so in effect have the worst of both worlds. In a way, the Sardar should be prime disc territory (I wonder now why Dawes didn't just fit them): load lugging, wide tyres, muddy conditions, all purpose bike. Of course I haven't got a clue as to how the ride is affected - all I know is that it's stable, smooth and comfy. So maybe in the future I'll fit a front BB7. In the meantime, I'm sticking with rim brakes on all my other bikes.