Is Design Really Important for a Blog?

Is really important for a blog? I feel that a good design can get more people to respect your website or blog and it will also help you get more subscribers for your feed and newsletters. But there are some blogs out there and those designs are not too good. So how do they still manage to get so much traffic and subscribers. May be good content is all that is important. But a good design will always be of use to you. A blog with a good design and good content will always be in the good books of it's readers.