My motto is “Clients are idiots”, though if you let them know this odds are you will not be paid. I tend to find this motto is true 90% of the time in the Design/Development field, mostly because clients see you as someone who is paid to make something the way they want to, not in a way that will look good & be functional. Here is a video which pretty much sums up why clients suck.
Click here to go to the original source of the video.