Yeah it's amazing, and I recently did a project on KiCAD nightly (because it has better support for complex buses and high speed stuff, and I needed to put 14 HDMI links on a board) and that's even more amazing (though currently quite buggy as a lot of new stuff was added and it's now in pre-release feature freeze to get the bugs out).

There's also two other excellent floss electronics CAD tools - LibrePCB and Horizon, which are also worth trying. They are built by people who felt they could do a different workflow to KiCAD, and have succeeded at that. I personally still feel more comfortable with KiCAD, but it's always nice to see alternatives.

One thing I've been seeing with the FLOSS tools that just doesn't exist at all in the commercial world is cross-pollination of both code and features. KiCAD now has footprint DRC built in, which is something that originated in LibrePCB. And Horizon uses the KiCAD routing engine internally, while having a completely different everything else. Developers of all three hang out with each other and exchange ideas. This is something where the commercial closed stuff simply cannot compete.