I'm wondering, which OS are you guys using?

This recently caught my attention. I posted on a blog that I develop in an iMac. I'm a Front-End Developer who also does design and UI/UX stuff. After I posted it, I received a lot of hate comments towards why I'm using OSX and that I'm a disgrace. This was kind of weird to me cause of a blog note I saw months ago which stated that there's literally lots of developers doing their stuff on OSX.