I would say you definitely need to be reading what you write. If only so you can do market research and see what's out there. But more because it's great to love what you write. For example, I love reading YA/MG Sci-Fi and Fantasy, it's my jam. So, of course, when I started writing I wrote in those genres.
I had a severe case of writer's block this summer, and I came to the conclusion that the best way to continue being productive even if I wasn't writing, was reading. And specifically reading in the genres that I write. So I made myself must-read lists.
Here are some examples from my reading lists:
Book I'm writing: How to Invade Earth in 7 Easy Steps
Genre: MG Sci-Fi
by: Jamie Thomson
by: Douglas Adams
by: Adam Red
Book I'm writing: Untitled
Genre: YA Superhero/comic book style
(so...i don't know, contemporary mystery?)
by: V.E. Schwab
How about you guys? What books are you reading? Do they inspire your writing? Any fun suggestions for my reading list?