I use Kicad now and then just out of interest. I am 99% a Linux user so if I do a final design myself then I use the Geda pcb tools, simply because I have used them for many years, and while they have their own problems, the library handling is vastly better than the Kicad system. And I do not see much hope of an improvement in the Kicad library system in the future. Linux default library paths
There is no real collaboration needed on designs in my work (short term entertaiment, shows, exhibitions, films etc.) so If a test piece is passed on to a colleague it is never more than a few pages of A4 and always needs modifying and redrawing so it is no big deal for them to redraw it in whatever software they use. I have seen copies of Altium and Eagle at one end of the spectrum and RS Designspark at the other. The same with Cad software, $olidworks, Rhino cad and me with Freecad 