I wouldn't recommend doing UI design in a raster graphics application, even though there are lots of templates and resources for UI design for Photoshop and surprisingly much less for Illustrator.
I agree with that, but I didn't really run into issues with raster web design because I replace most graphic materials with CSS which is scale-able during web development. I considered it as a solution.
I wouldn't recommend doing UI design in a raster graphics application, even though there are lots of templates and resources for UI design for Photoshop and surprisingly much less for Illustrator.