Have you heard anything about backup? 
Any program is subject to errors that can break files. The larger the program, the more likely it is that something will break.
In addition, your hard drive may also fail, so backups should be made on different physical drives.
At one time (when I was young and stupid) I lost data that was important to me…
Since then I̶ ̶h̶a̶v̶e̶ ̶p̶a̶r̶a̶n̶o̶i̶a̶ I regularly make backups and my nerves are fine(I hope).