Simple.

Unless you are in the website-building business, you need to spend your time on your business, NOT your website.

Yes, you could do it yourself, or hire the local teen, and you would have a site... 

You need MORE

You need:

• to know security updates are done consistently
• reliable backups of your data
• someone who knows what to do when things do not go as planned
• a team who enjoys staying up-to-date on the latest technology
• someone who can help you figure out a site that is right for you
• a promise that if you move your site to another company, your data goes with you
• trusted people managing your data
• a system to delegate tasks at your site