My design workflow has moved from Illustrator for design structure and Photoshop for high-fidelity design, to strictly Sketch from conception all the way to exp

My design workflow has moved from Illustrator for design structure and Photoshop for high-fidelity design, to strictly Sketch from conception all the way to exporting assets, with the rare Photoshop for some assets (like to-the-pixel ones). It's totally changed my design process, and it's made me wonder why there wasn't a really good app that was built from the ground up for UI design before—and why we have been 'hacking' Illustrator and Photoshop to do UI design. Vector objects on a pixel grid, @2x exporting, non-destructive properties on items. Still buggy as hell, but despite having to restart it multiple times a day, it's still worth it.