The thing of it is, the next person that looks at the site might not know PHP... then what? You must know HTML to be able to work with a webpage. Anything else is just a further restriction on who can edit the site. Most small businesses get their websites managed by whoever happens to come along with a tiny bit of knowledge. The tiny bit of copy and paste you might need to do to avoid non-HTML is a perfectly good tradeoff to keep the barrier of entry as low as possible for the next poor schmuck who has to go in there and twiddle with things.