First of all, let's face it. A website is the core of your online marketing activities. If you look at all the marketing channels and techniques, what they actually do is bring visitors to your website. The main purpose of a website is turning these visitors into customers. In marketing terms, this is called conversion. A bad website will basically cause you to waste money on other marketing methods because you don't need more visitors if you can't turn them into customers. The better your website is, the more visitors are converted into your customers.