What is Linux not doing for you?
Memory Map? (-:
Offhand,
I need to run VPN clients for Cisco, Juniper, F5 networks, and other random disparate networks with new ones I've never heard of previously being dropped on me on pretty much a weekly basis. I need a solid RDP client, along with clients for TeamViewer, VNC, LogMeIn, GotoAssist, XenApp, and again whatever else some random customer happens to be using at their end. This is the big gotcha because even if Mac or Linux manages to tick all these boxes now, there will be another round next week where all the goalposts have moved.
Aside from that I need 100% compatibility with Office across the board, including Visio, Powerpoint, Excel, Access etc. "Near enough" is not good enough as I have to produce Enterprise level documentation for customers and can't risk slight formatting inconsistencies.
I'm sure I could come up with others given time. Point is, I know Windows will run tomorrow's random software without any compatibility issues or me generally having to frig about with it.
Which comes back to, the right tool for the right job. I could use something else, but it'd be the wrong tool and I'd risk rounding off my nuts.
Oh dear, I spoke too soon.
Look, they're just operating systems. It's not a big deal.
Far as I can see, this is constructive, healthy discussion. Unusually. So far.