I switched from MBP to a Dell XPS 13 with Ubuntu. I compare the experience to living in a hotel vs. living at home [1]. In a hotel (=on Mac), everything is stylish and cared for, but you have very little freedom to change things. At home (=on Linux), you need to do the dishes yourself but there's no external agenda. It's simply yours.
I'm very happy with the switch. Though I'm on (Debian+) Xfce now instead of Ubuntu and would go for a ThinkPad instead of the XPS, because 1) I want a 14" screen 2) the XPS's fan is too loud, especially when Skyping 3) the XPS's camera is placed at the bottom of the screen instead of at the top, so people you have video calls with look up your nostrils.
I'm very happy with the switch. Though I'm on (Debian+) Xfce now instead of Ubuntu and would go for a ThinkPad instead of the XPS, because 1) I want a 14" screen 2) the XPS's fan is too loud, especially when Skyping 3) the XPS's camera is placed at the bottom of the screen instead of at the top, so people you have video calls with look up your nostrils.
[1]: https://fman.io/blog/home-and-hotel