It seems obvious that each computer user should back up all important data on his PC. The question is whether people really protect their computers from data loss. Here are some of the reasons why you might want to consider backing up data to be a part of your regular routine:
1. You can lose your data anytime due to even a single virus on your PC.
2. Power failure and hard disk problems might also contribute to significant data loss.
3. Do not assume that computers nowadays are secure. This false sense of security can be the reason you might lose important data.
4. You should back up all valuable data so that you will not have to worry about losing it. You will be able to sleep peacefully knowing that your valuable data is safe.
If you decide to back up your data, then you should consider using an external hard drive for this purpose. Make sure you store it in a safe place so that no one will be able to get hold of it. If you are wondering how often you should back up, I am going to say that there is no magical number. Once per month is generally considered to be a good idea, but if you want to be on the safe side you may want to back up every week. Some decide to make a back up on a daily basis, but it actually might be quite excessive, so in the end it is your choice.