Your website is your shop front so once it gets found by customers you need them to sit up and take notice. Websites that are visually unappealing, or that cause customers to have to think too hard about what they have to do, or that do not work the way they should will cost you customers. Not only that, but many web users now access sites via mobile and when websites are not compatible by mobile they simply click away.
And don't be fooled by those do-it-yourself website companies. If you own and run a bakery, why would you want or need to know and learn web design? You have a bakery to run.