Linux = Free ,,,, but really,, it isn't that user friendly, can be very confusing on the back end to try and fix things. Yes, believe it or not, linux and it's software can break.
If Opperating systems where cars, Windows would be a minivan, Get the family from A to be even grandma can handle it, but it don't really get much real important work don on it. Mac would be a VW Beatle, it's cute, fun to look at but still limits you to what you can fit in the trunk. Linux would be Ferari's next generation concept car, Cutting edge, perpetualy experimental, yet it's build by people who know what the hell they are doing!