This is a silly thing to say. I use Linux whenever I can. I still keep Windows for two things, gaming and Photoshop. Desura has made Linux gaming MUCH more accessible though.
Windows is very flawed. Due to it's poor design it has a number of security issues. Linux viruses are possible, but extremely rear. Many businesses still use Linux, including Google, who use it a lot.
The success of Desura's linux client shows that there are people who want this.
And the average Linux users donation of $10 on humble bundle compared to windows users $4.