Obviously I can't let my own website be built by anyone else than myself!
I started this website as a simple HTML & CSS-only site. I didn't need anything fancy, nothing
dynamic, just something to showcase my work.
Very quickly, I realised I was copying and pasting very large portions of pages (header, footer, 'other projects' block, ...). As a developer, doing the same things repeatedly goes against my nature and so I couldn't let that stand.
I copied over the existing work into a new Silex project and continued. I could now focus on creating the content of the site in plain HTML as intended, but without repeating code in each file.
As an added benefit, the amount of work I had to do to create my site in another language was cut in half.