Actually, not all writers will tell you that. Stephen King doesn't worry about reviews so much. Neither does Rowling, these days. Come to think of it, these days they don't have to worry about sales so much, either.
Still, for most of us reviews are a big deal. There's one thing we all desire more than reviews, though: Good reviews. If the reviews contain the words "greatest ever", "genius", or "eat your heart out, King and Rowling", it's probably a good review. Not always, though. Here's a review I got for my first novel, Storm Chaser:
"This is the greatest ever waste of space--getting people to buy it was a genius con. Eat your heart out, King and Rowling: You'd have never gotten away with this."
So there are always exceptions. Here are some questionable reviews my other books received:
Storm Chaser Shorts:
"Dude, shorts are never mentioned at any of these stories. Sure, there are some storms, and people get chased once or twice, but that's only two-thirds of the title. No truth in advertising!"
"This book should have been way longer. He didn't cover every single day. He missed most nights. And what's this 'or so' crap? This guy will never write another history book again."
The No-Campfire Girls:
"I'm all for adventure, but don't they have a safety director at this summer camp? Arrows, explosives, storms, fires--it's an insurance nightmare. Also, it has all these teenage girls, and no representation from teenage boys; it should have been more gender neutral."
Slightly Off the Mark: The Unpublished Columns:
"Opinions are fine as long as they're mine, but these just aren't my opinions at all. Also, I have the strangest feeling the author is trying to be funny. That's just unacceptable. I'm fairly certain I'm offended."
Images of America: Albion and Noble County:
"Okay, this is lazy, lazy stuff. They're supposed to be writing, and instead they jam the whole book full of pictures. And they didn't even take them themselves! Somebody paid them for this? (Update: Okay, somebody pointed out that 'Images' is in the title, but that's just lazy titling.)"
The Notorious Ian Grant:
"So this offensive guy drives all the way across America just so he can insult people in a different state from the one he usually insults people in. Then he's surprised when people want to kill him. Well, California wisecracking doesn't cut it in the Hoosier state, fella: Take your sexy stubble and go home before you get Tazed just like everyone else in this story."
Hoosier Hysterical: How the West Became the Midwest Without Moving At All:
"I appreciated all the photos, but I don't know what they're of. Also, I'll bet the jokes would be funny if I knew what they were about. I think this is about history. I don't like history, but the section on Indiana celebrities was cool. But I've never heard of most of them."
"I've never heard of this book. Should I have heard of this book? Maybe if it was free, I'd try it. Why do these writers want so much money, anyway?"
I'm afraid to even bring up the newest anthology, The Very True Legends of Ol' Man Wickleberry and his Demise. I mean, it's got violence and ageism in it. On the other hand, it could be worse. None of the reviewers specifically referred to me as a "bad writer".
Well, none that you'll hear about from me.