yosemite valley is hardy the untouched unmolested wilderness that it might once an extremely long time ago have been. they just recently took out the hydro electric plant (and did a pretty slick job of it too. and it cost god knows what to do it that way)
and the reason You want, really truly want, roads and campsites with showers and pottys, and a better bar, and perhaps even bring back the gas station is this.
we are old.
we are few.
we are wearing out.
there's nothing of note behind us, just a soggy batch of softass loosers who are led by the nose from one outrage to another.
and if no young children wake up in yosemite valley on a cold morning and eat crappy half-cooked pancakes from a coleman stove while their parents bithc at each other, how they going to learn to fall in love with the wilderness ? how ? eh ? how ?
because their parents/grandparents take them ultaralight backpacking ?
give me a break.
it ain;t happens often.
we need to make some places accessable to normal people to the little ones can partake of the greatness of it all.
the valley was trashed a century ago. it's not going to be the same. ever.
(and for one it will never be the same because i rode my dirt bike in their merced river.)
but FANTASTIC use can be made of it as a way to enlighten others on the wonders of the outdoors.
and that is why you/we want people camping and being fat and walking and bicyle'ing and strolling and looking at the rocks, and eating slurpies (and terrible pizzas), and meeting people form ALL over the world in the lounge at camp curry on rainy days, and freezing in the phitty tent cabins and generally being the slovenly goons like people are .. in yosemite valley.
so we will have enough sentient caring bodies later on to know the difference between a good hydro project, and one that could, but perhaps should, not be built.
you toss folks and kids out of yosemite ... you're eating your seed corn.