Comment Depends (Score 1) 49
At work I use Macs because they run all the MS Office stuff, I don't have to buy them, they make the IT people happy, and I have a nice zsh prompt and can get stuff done using sudo if I need.
At home I have a Windows computer, mainly to play games and for reverse engineering work.
The main computers I use personally at home are a pair of Linux laptops, so my answer is Linux.