Why play an instrument at all, when you could just hang out and listen to music? Why paint when you could use a Wacom? Why slap a clump of mud on a pottery wheel when you could 3d print a bowl?

Because, for whatever reason, when you put a brush on a canvas, or clay on the wheels, or you hands on a big Steinway, some piece of you hums along with the medium and capturing that resonance is what art is.

It's all sort of idiosyncratic at the end of the day, and how the thing feels in your hands is a big component of the artistic/creative process. If it works for you, it works. If it doesn't, try something else.