I have developed over 40 websites for various clients over the years. Most of them have been for the companies that I have worked for.
When I work for these companies, I learn valuable knowledge about the latest technologies and languages that help me make better websites.
Everytime I get to work on a new website, I get to incorporate the best practices to make sure the code is easily maintanable and upgradeable.
When you decide when you want to upgrade your website, it doesn't cost as much time and saves you money.