I gave up GIMP for Krita years ago and have yet to see a reason to change (I still use Adobe as well, but for FOSS tools, Krita has stayed at the top for me)
They don't do the same things?
They do much the same things - if anything Krita is a more direct replacement for Photoshop than Gimp is.
Davinci Resolve is, for my use case, just as good as Premiere and Afx.
It's also free.
I wish gimp was as good as Ps.