It's ok to admit it. Hardly anybody does on a regular basis. But you're going to be sorry. Here's why:
Try this simple mental exercise. Imagine that the next time you press the power button on your computer it doesn't start up.
It's that simple. It's going to happen to everybody. Computers break. And when they do they take all of your stuff down with them. Photos, letters, email. Poof. All gone. Unless you have them backed up.
Backing up just means having copies of everything you care about.
And your files need to be copied to someplace other than your computer. If your computer stops working it won't make any difference how many copies you have on it, they'll all be gone.
So, what should you be doing?
I think the ideal backup strategy involves having at least three copies of everything you cherish. The following strategy is called the 3-2-1- Rule by Peter Krogh, and I first heard about it on Leo Laporte's TWIT podcasts :
3 copies, on two kinds of media, one of which is off-site
1) The original, on your hard drive.
2) A copy on external media of some sort. This could be on a flash drive (these are cheap and easy to store) or an external hard drive that you connect with a cable to the main computer.
3) Another copy that is stored off-site somewhere.
That last item is really important. Off-site. Because if your house burns down, or is hit by an earthquake, or you get flooded out, it sure would be nice to have copies of your stuff somewhere else, wouldn't it?
You can accomplish off-site backup any number of ways. You can take your home backup copies (on drives or disks) to work and leave them there, and vice versa. You could give them to a friend for safekeeping. One of Leo's friends mails his backups to his mom every week. Or you can subscribe to any number of free web services that will let you store your stuff online: Dropbox, Box.net, Skydrive, ADrive. Those of you using Macs can subscribe to Apple's MobileMe service.
But the thing to remember about any backup strategy is that it only works if you remember to do it. So the easiest and safest thing to do is to set up a system that backs things up for you. In other words, take yourself out of the equation. There are a number of paid web services that allow you to do this. I use Carbonite, but there are others on the market that do the same thing. You set up an account online and then their software automatically uploads your files without any attention from you. If your computer ever crashes you can simply download your files from their site.
So no excuses, ok? Back your stuff up.