Earlier this week, I was asked (on LinkedIn) if I use #linux
I used to use #linux but I only have one Linux #server which is an Outline #server running #ubuntu 14.04 LTS on a #DigitalOcean #droplet in London (I will set up a second in Los Angeles or San Francisco when Outline supports managing multiple servers from one account).
#linux-based and #UNIX-based OSes are similar in their community support despite different scales to those communities. I prefer #BSD for various reasons, many of which I do not talk about publicly because it is not for me to share the exact nature of complaints made by my friends and I.
Anyone can work on anything but I do have my chosen favourites which happen to be the ones I work with normally which is completely normal and I would expect that of anyone or any company I worked with.