The bulk of my UI graphics and mockup work has been in Sketch for around a decade at this point, with the odd excursion into Pixelmator Pro or Affinity Photo for work more suited for raster graphics. For vector work I’ll occasionally use Affinity Designer when Sketch isn’t working quite the way I’d like for some reason or another.
Have tried Figma and it’s ok I guess, but leans too far into prototyping and collab for my own personal use, plus I don’t like how they keep your full fidelity original documents locked away in an proprietary document format (Sketch’s file format is open and publicly documented).
I have a Photoshop license but it’s used only for following art instruction videos (drawing, painting, etc) just to reduce friction, since that’s what the bulk of instructors are using and I don’t want to fuss with remapping keys and hunting down equivalent functionality mid-lesson. All “serious” work is done with other software.