Take 2 people that have not used gimp or krita. Ask them to daw a circle, and see which software they are able to do it in.
Gimp is a ux nightmare (or at least it used to be i haven't used ot in years) I will try gimp 3 when it comes out in 2037
GIMP 3.0 will be released this year, as far as I remember. (I already using the final test version for 3.0).