Which specific features are keeping you on Eagle? Most of my more "serious" work is still in Altium, but I've been really pleased with a lot of the QoL features KiCAD has been picking up on as of the later releases (bulk sheet symbol entry placement) and feature coverage is good enough that I'm happy doing mixed signal boards with a few high speed interfaces.

Live synchronization of layout and schematic files. I consider this essential to circuit design, especially in later iterative stages. That alone totally eliminates KiCAD as a professional EDA in my opinion.

Live synchronization of layout and schematic files is a feature you find in EAGLE, but in almost no other EDA program.

If you say KiCAD is not an professional EDA due to missing live synchronization, the same argument applies also to Altium, Cadence Allegro, and most other EDA systems which are considered as professional by most people.

Fine. KiCAD's manual tool still gives me more trouble than Altium ever has. How about the lack of a built in autorouter? Infuriating wire placement UX? We can keep going here.