wow man, you are totally missing out then
I think using it to listen in class is a low return activity-- while you will be better off with it, the huge change for me happens when I am studying, writing and reading. There is a reason why it doesn't say "for listening" on the box...
Honestly, use disc one while reading/learning and there is no way you won't feel in the zone.
And don't let your negativity get in the way-- you seem to have a "blame everyone else" attitude. Just cause it didn't work for you doesn't mean you abandon it. Figure out what you are doing wrong. Trouble shoot.
Take responsibility to use it right. Not trying to be critical, just trying to get you to realize the benefits I've experienced I am on your side here.
Keep us posted! I've got my super hyper kid brother even using it to great effect-- it is funny, I play it while he does homework and you can observe the huge change in his focus and attentiveness... but I've yet to tell him about it. He'll catch on soon