Losing cuesheets is common enough that I'll try to grab a second one (if I'm going to use it).

I can understand people seeing using just cuesheets as a challenge but I'd be surprised to find anybody who likes using them.

I've been on multiday rides where they pass out the cuesheets (whatever) the night before and I create gpx routes from them. Cuesheets also don't work very well if you miss a turn.

If one is doing an organized ride that is being repeated (like annually) that only provides cuesheets, you can often find recorded tracks from prior years (on ridewithgps for example). Even if the route isn't the same, it's often very similar and more than good enough to navigate by.

For Randonnees, cuesheets are the only "officially allowed" navigation tool but they usually give them out before the ride (which means one can create gpx files from them).