R.I.P. Hard drive

Over break I lost my entire hard drive, and like a lot of other people I know... I didn't back it up. Therefore I lost all my music, my photos(A TON OF PHOTOS), videos, school work/work from the last 4 years, Microsoft Office, and Adobe CS5 programs. It really sucks and it is so expensive to have it recovered and even if it can be recovered not all of it will be there. Moral of the story: back up your computer.