Nobody has mentioned retirement, I mean you can't cycle anywhere if you haven't the time !
( Perhaps not a invention as such.)
I’ve never had to throw away a worn wheelset in 20 years. Use for a few years then sell on, upgrade & repeat the cycle. The lightest wheel sets you can buy are for rim brakes actually.
MTB & gravel Disc.
Road bikes Rim.
It’s that simple.
If you think about it classic Rim brakes are not too dissimilar to being Disc brakes, a rim brake is nothing more than a disc with a gurt big 'ole in it, it works in a similar fashion by jamming a pad against the rim , just like a disc & pads.
I do dislike disc brakes on bicycles, most of my bikes are either rim or hub brakes, another anachronism, my Sturmey hubs on the recumbent trike are 90 mm , and work very efficiently in the wet,, and I can stop on the proverbisl sixpence should I want to, but that's at the expense of lifting the back wheel, I do run the risk of brake fade, on long decents, but they are such strong brakes , I only need a big handfull in extreme cases, I rarely brake constantly downhill, but I guess a disc could be usefull on the back wheel as a drag brake, but you really shouldn't use a back brake on recumbent trike, it can affect the handling bin and adverse way, but if you know what it's about, can be handy doing handbrake burns, and skiddybaroches'
But you really shouldn't , wrecks the back wheel