The difference between distros.
I have always used a distribution that I thought I needed for my work flow.
With this being said I can not deny I've been a distro hopper. Been using fedora, arch, antergos, manjaro and recently the great opensuse for the last couple of years. Right now I run Antergos with Gnome and I must say I got something quite against Gnome always have since I do not know when. It feels so large and sluggish.
During my recent vacation I decided to make a complete make over on my main machine. Doing a reinstall. The iso prepared is Manjaro KDE.