Years ago I designed a logo for a client. They initially didn't like it. At some point, they reluctantly started using it. After awhile, they started getting all kinds of positive comments from customers on their new look. Customers now readily identify the business with the logo. Fast forward to years later, and this client apologetically admitted to me how wrong they were and how much they have grown to love their logo, how they now appreciate the simplicity and power of it, and how it has withstood the test of time. They still get positive feedback on it.
You trust a good mechanic's advice, a good plumber, a good lawyer, a good financial expert, but somehow, when it comes to design advice, everyone's a frigging expert and has to stand over a designer's back, second guessing their professional wisdom.