As a reader, I read quite widely.
There are so many good books, I don't want to only read within one particular type.
I've read a lot of classic literature from assorted cultures, and always glad to read more when one comes across my path - but why be embarrassed by the fact that flesh and blood has limits? Nobody's read everything.
I don't buy books, ever... and I only tend to read the sports press.
I read everything: fiction, history, science, mathematics, biography, travel.
I don't think you should limit what you read.
Of all the love stories ever published, I have - realistically - read very few.
If you're a writer, and you write fiction, that's not all you read.
I read the same amount of nonfiction and fiction.