Somehow, I never managed to get past chapter 15 of Gakuen Alice. I would read until there and then get bored and stop, then someone would recommend it to me again, then the whole cycle repeats.
As of now, however, I am resolved to stick with it till the end (or the latest chapter) because of something Mikan said: Just have fun, and don't worry about all that serious romance stuff. Or something along those lines.
And for that you win my eternal support, Mikan. Although I still hate your personality and we all know you're going to end up paired with Natsume/Luca anyway. Unless you end up with Hotaru, which would just be... freaky.