Hobbies can reinforce our writing. I like hiking, being out in the natural world absorbing scents and sounds as well as images. I use hiking and nature to recharge my soul and in my writing by way of description.
Everyone needs something to recharge their soul. And adding authenticity to writing is always a benefit.
Some writers have hobbies, such as fencing, they use in their story. The descriptions of actual movements, aches, pains, body benefits, makes the story feel authentic.
Do you have any hobbies which feeds your creativity?