I see where you're coming from, sometimes Honest Feedback can be a bit harsh. But Honest Feedback is the Best Feedback. I've learned to turn negative feedback into constructive criticism. You can't take it personally, these are things that may potentially help your business (assuming you can identify and solve whatever problem is raised). I'm an optimist at heart, but when it comes to feedback, I always tend to focus more on the negative feedback. In terms of fine tuning my product, I think there is more to learn from the negative feedback (not to imply that positive feedback is not valuable). I don't consider my job well done until there is no negative feedback (rare), or I do everything I can to minimize the negative feedback. It has become an effective strategy that allows me to learn from potential customers and fine tune the product (customer feedback loop).