I am a Linux User and i use Solus as my primary OS. Stopped using Windows 5 months ago. I am a novice and i still need to learn lot of things, till now i am happy with its performance and best of all it is very smooth.
I don't use the Linux as my full time machine. I use it only as an alternative to the Windows when the development demand needs it. I personally find the Ubuntu useful along with the Mint linux. I also don't see much use for Linux in places where you need specific set of application which you pay for getting the work done.
I don't run Linux on my desktop or laptop but I do run Ubuntu Linux on all of my website's servers. I've considered FreeBSD or OpenBSD as well but the driver support doesn't seem to be good enough yet. Maybe one day it will be