Many designers gleefully talk about casting off the yolk of Photoshop by switching from Photoshop to Sketch, as if they're somehow equivalent.
e.g. "I was using PS, but since getting Sketch, have never used it again!"
If you work in design, you will need an image editor still, and maybe some other tools.
And just to be sure, I checked. Sketch didn't let me layer multiple images with complex blends, masks etc to create a greater image. It didn't let me select a part of an image with a freehand select tool. I can't find a Liquefy tool, or Lens correct or colour correct. Etc, etc, etc. Actually, if you compare them as equals Sketch sucks!
So the question is, "I switched from Photoshop to Sketch and ... ?"