I just had a power supply burn up (I could smell it) on one of my two WinTel home computers. When was the last time someone here had a Mac power supply fail? How about burn up and fail?
I had a family member's Mac power supply fry about 6 months ago, and another one had the Mac's hard drive die about a year ago. I don't see this as being anything pro or con, it just happens sometimes. This is particularly true with hard drives. This person had not done any backups and told me they thought Macs were reliable. Of course they are, but it drives me bonkers when any computer user doesn't back up their data. A backup or image of the whole drive is a good idea too once it is setup with all your essential software and has had updates or patches...that saves a ton of time in reinstalling software.