Everyone needs to back up their system and files. I use the Tiimemachine, but still use two cloud -off site. Computers, disks all of those crash and burn. You need to do two things with any computer.
1. Anti-virus (I use Norton 360, but there are a lot of good.. Bitdefender, Kapersky, etc)
2. Back up your files.
3. (a distant , notice the space) a battery back up such as an UPS - I use Cyberpower but you need it for the time the power goes down and you want your system to save your work.