Please use Hashnode search! There are quite a few threads covering this exact poll already (and are not that old, either!).
However, here is my answer again:
I used to be 95% Windows, 5% OSX, but for a while now, I do the following:
Of course, using Linux might also mean that you do not have support and additionally need to have more in-depth knowledge about your operating system. However, I prefer having complete control over my system