#9 isn't a real reason to use Linux, and #5 is more the lack of a disadvantage than a positive advantage, but the rest are good reasons.
To add some reasons, the lack of price is a good one, and there's a lot to be said about the efficiency of a CLI (although that's not entirely fair since Windows has the PowerShell).
I use FreeBSD personally, but I see Linux as part of the same camp (hence why I prefer to talk about 'Unix').
Thanks for the feedback @RyanWestlund
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