Hola Ozren ;
I think the both are good to pratice everyday (but not too much, because I think you know about Carpal Tunnel). The traditionnal art can be showed more easyly to their frinds than the digital one, and the digital drawings can give a more clean version of a draw. Both of them can be lost, traditionnal by being on another place you don't know the draw is here, and the digital one if your platform (graphic tablet or phone) is broked and other things.
If you struggle with digital, draw something on a piece of paper (your draw, ofc) and after, scan/take a photo of it and put the draw on your digital art programm ! So, my answer to this gonna be both.
