If you build a website and never put it on the internet, is it really a website?
This is not a deep philosophical question. It has a simple answer.
A development site is like an unsent email in your draft folder or all those baby pictures of your teenager on your phone that you keep meaning to back up to your computer or maybe even print and hang on the wall.
So then why are there so many websites living in the purgatory of a development environment instead of on the world wide web?
This is not a rhetorical question. It also has a simple, though not as brief, answer.