Let me guess.... Linux sucks for you because it won't run Microsoft Office and other Windows applications?
That is a common reply that I see...
First, yes... Microsoft Office is indeed important... for people who share documents, spreadsheets, etc. with the outside world, using the standard does matter. OpenOffice doesn't convert them perfectly and small errors creep when you try.
Second, yes... other windows applications do matter, many such as Quickbooks are important for many businesses. It is what their CPA uses, so keeping your accounting files in the same format that allows you to easily upload your data to your CPA, they can do their thing, and send them back, is more important than what OS you run.
Finally, Windows just works. XP was "good enough" and killed off most further interest in Linux on the desktop. Windows 7 took it further and torpedoed the rest of it... Windows 8 got a lot of flack, 8.1 fixed much of that mess... You install Windows 8.1 on almost anything made in the past 6 years and it runs very, very well.
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As a side note, if the reason you want Linux is because it is "not Windows", that will never be enough of a reason. You need a reason beyond that to get the bulk of the people to care.
Apple OS X has three times the Linux marketshare (if not more), and it is one of the most expensive options you can pick. That more than anything else should pour cold water on the Linux Desktop idea...
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For servers? Wonderful, totally wonderful, I get that it does have a bright future there.