Some clients are inspirational, they know what they want, they know their stuff and they question things that make the project move really fast.
Some clients got totally no idea what is going on. A lot of time, they will call you at random moment asking why there’s no rainbow farting unicorns on their main page.
Some just make exciting project very boring. They got no idea about colors, about typography, grid system and well the list gets really long here. Then they send you email of a list of text that need to be better spaced, make this font smaller, that font bigger, change the same blue color to be the same blue color. Oh mannnnnn, it’s so bad I want to cry.