You're not alone, I gave In The Aeroplane Over the Sea a lot of chances but it just never impressed me. First time it damn near put me to sleep so I figured I'll try it again later, when it's not late at night and thus I won't be sleepy, didn't work. Then I decided to try it while I was stoned, while I can say it definitely enhanced the fun of staring at the ceiling, I still couldn't figure out what all the fuss was about.