All computers can be vulnerable to virus attacks or hard drive crashes. So, you need to backup your data to save all the work you did in the last years. You invested a lot in these data, so you do not want to lose them.
Your business could be affected, so creating backups will save all your work in a safe place and you will be able to use them anytime your client need them.
Your Advanced Link Manager data will never be lost as long as you create backups for your projects regularly.