You have guessed it, if you don't use Linux by 2016, then you are begging to be hacked. You know if you are in the cryptocurrency space and do have some coins on your computer, then using Windows or Mac is a pretty poor decision.
Even if you hold your coins safely, in a hardware wallet or in an offline PC, you should still not use closed-source OS's like Windows and Mac. You do use services where you have to login from a browser and for that such decisions could be catastrophic.
I can't see why people still don't use Linux, it's easy to install, easy to use, it's free, it's safe and it has a whole lot of softwares tied to it that are also free, safe and open source. The only possible reason why people still use Windows is for gaming, but that can be done in Linux too via VM's, although less performant, that is true.
Comparison
| Characteristic | Windows | Linux |
|---|---|---|
| Price | 129$ | FREE |
| Code | Closed-Source | Open-Source |
| Usual Softwares | Pay | Free |
| Security | Low | High |
| Ease of Use | Hard | Medium |
| OS Encryption | No | Yes |
| Basic Photo Editor | MS Paint: Free but basic | GIMP: Free and advanced |
| Basic Office Package | MS Office: 80$ | Libre Office: Free |
| Basic Audio Edit | Only 3rd party for pay | Audacity: Free |
| Browser | Internet Explorer: Closed Source | Firefox: Open Source |
| Programming | C++/C# for pay | Python for Free |
| Encryption Tools | No | Many & Safe |
| Privacy Friendly | Hell No | Yes |
So as you can see, if you do work with money online or have high valuable online accounts, you certainly don't want them to get hacked via some browser exploit, that closed source browsers could have. They are not transparent, and who knows whats inside them, lack of transparency is very bad.
Windows is poorly designed and it get's infected with malware constantly, and then you need to spend money for additional anti-viruses, which are just to make you feel good but I doubt their effectiveness. On linux there are no viruses, well certainly not the common ones.
A linux OS works in a very organized way, you have a master password, and a virus is ineffective if it can't get a hold of that password, since without that, it doesn't have root access to the system's files. All you need to do is just login as non-administrator for your casual computer activity, and if you suspect a virus was downloaded, just wipe that account and create new one. I can't believe people still fall for these anti-virus scams. A virus should not penetrate the OS in the first place, then you don't need "anti-viruses".
Although this is only for trojan type viruses, a browser exploit could still be worrysome, but then you just select what addons and extensions you add to your browsers. Just use common sense and don't install suspicious things.
So just give a try to Linux, you won't go back to Windows after you have tried it, I promise you. I have been using Linux since I got into the crypto space in 2013, and never gone back to Windows, I even throwed away my original licensed install CD's as a vow.