Before getting hit with Epilepsy I used to paint murals and canvases for a living and I started using my tablet basically as a portfolio. Examples of actual physical media printed out on photo paper and carried around in an old style leather bound portfolio was bulky and easily damaged. Converting all the images into digital formats and carrying around a tablet was far simpler. Not to mention on the go gaming
Now that I am stuck doing mostly digital work from home I still use a tablet to keep jpg files of all my work.