HoW CoMEs.....

I really lost my IT notes......
since i graduate from secondary school,
i got keep all my notes included all my exams paper...
but
how come i dint keep my IT notes har?!
Why i keep all the notes that are no use har?!
Maybe i have throw it or recycle it....
but why???
Why that time i am so ensure that i wont use it anymore....
why that time i am so ensure that i will take the courses that will not related to this subject har????
then now i regret.....
but no use already...
haihz....