I had a girlfriend once who bought some just for the accesibility feature.
I had a front-clasp bra in high school that I loved–I don’t remember exactly what happened to it. I’m sure I wore it out.
I’m incredibly lucky in that I have weird arm joints that give me no problems with reaching the bra clasp in the back–I don’t have to fasten in front and then spin it around. I can also unclasp it with one hand (three fingers, technically–it’s sort of a pinching/snapping motion with two fingers and my thumb).
Once I have mine on, I usually, uh, reach into each cup and, erm, pull things back up into place. If that makes any sense. 
Yeah, the bra lady who fit me at Belk said you should always fluff them.
“Fluff” does sound much classier than “grab a handful of titty and reposition.”